Publications in journals



S. Ravishankar, S. Gharibzadeh, C. Roldán-Carmona, G. Grancini, Y. Lee, M. Ralaiarisoa, A.M. Asiri, N. Koch, J. Bisquert, M.K. Nazeeruddin
Influence of charge transport layers on open-circuit voltage and hysteresis in Perovskite solar cells
Joulex (2018) xxx


M. Timpel, H. Li, M.V. Nardi, B. Wegner, J. Frisch, P.J. Hotchkiss, S.R. Marder, S. Barlow, J.-L. Brédas, N. Koch
Electrode work function engineering with phosphonic acid monolayers and molecular acceptors: charge redistribution mechanisms
Adv. Funct. Mater. 28 (2018) 1704438



A.J. Huckaba, S. Gharibzadeh, M. Ralaiarisoa, C. Roldán‐Carmona, N. Mohammadian, G. Grancini, Y. Lee, P. Amsalem, E.J. Plichta, N. Koch, A. Moshaii, M.K. Nazeeruddin
Low‐cost TiS2 as hole‐transport material for Perovskite solar cells
Small Methodsx (2017) xxxx


A.J. Huckaba, M. Ralaiarisoa, K.T. Cho, E. Oveisi, N. Koch, M.K. Nazeeruddin
Intercalation makes the difference with TiS2: Boosting electrocatalytic water oxidation activity through Co intercalation
J. of Mater. Research33 (2017) 528


S. Park, N. Mutz, T. Schultz, S. Blumstengel, A. Han, A. Aljarb, L.-J. Li, E.J.W. List-Kratochvil, P. Amsalem, N. Koch
Direct determination of monolayer MoS2 and WSe2 exciton binding energies on insulating and metallic substrates
2D Mater. 5 (2017) 025003


A.D. Jodlowski, C. Roldán-Carmona, G. Grancini, M. Salado, M. Ralaiarisoa, S. Ahmad, N. Koch, L. Camacho, G. de Miguel, M. Khaja Nazeeruddin
Large guanidinium cation mixed with methylammonium in lead iodide perovskites for 19% efficient solar cells
Nat. Energy 2 (2017) 972


O. T. Hofmann, H. Glowatzki, C. Bürker, G. M. Rangger, B. Bröker, J. Niederhausen, T. Hosokai, I. Salzmann, R.-P. Blum, R. Rieger, A. Vollmer, P. Rajput, A. Gerlach, K. Müllen, F. Schreiber, E. Zojer, N. Koch, S. Duhm
Orientation-dependent work-function modification using substituted Pyrene-based acceptors
J. Phys. Chem. C 121 (2017) 24657


F. Zu, P. Amsalem, M. Ralaiarisoa, T. Schultz, R. Schlesinger, N. Koch
Surface state density determines the energy level alignment at hybrid Perovskite/electron acceptors interfaces
ACS Appl. Mater. Interfaces 9 (2017) 41546


Q. Wang, J. Frisch, M. Herder, S. Hecht, N. Koch
Electronic properties of optically switchable photochromic diarylethene molecules at the interface with organic semiconductors
Chem. Phys. Chem. 18 (2017) 722


X. Lin, B. Wegner, K. Min Lee, M. A. Fusella, F. Zhang, K. Moudgil, B. P. Rand, S. Barlow, S. R. Marder, N Koch, A. Kahn
Beating the thermodynamic limit with photo-activation of n-doping in organic semiconductors
Nat. Mater. 16 (2017) 1209


V. Belova, P. Beyer, E. Meister, T. Linderl, M.-U. Halbich, M. Gerhard, S. Schmidt, T. Zechel, T. Meisel, A.V. Generalov, A.S. Anselmo, R. Scholz, O. Konovalov, A. Gerlach, M. Koch, A. Hinderhofer, A. Opitz, W. Brütting, F. Schreiber
Evidence for Anisotropic Electronic Coupling of Charge Transfer States in Weakly Interacting Organic Semiconductor Mixtures
J. Am. Chem. Soc. 139 (2017) 8474–8486.


J. Li, S.-C. Dong, A. Opitz, L.-S. Liao, N. Koch
Design principles of carbazole/dibenzothiophene derivatives as host material in modern efficient organic light-emitting diodes
J. Mater. Chem. C 5 (2017) 6989


Z. Song, T. Schultz, Z. Ding, B. Lei, C. Han, P. Amsalem, T. Lin, D. Chi, S.L. Wong, Y.J. Zheng, M.-Y. Li, L.-J. Li , W. Chen, N. Koch, Y. L. Huang, A. Thye Shen Wee
Electronic properties of a 1D intrinsic/p-doped heterojunction in a 2D transition metal dichalcogenide semiconductor
ASC Nano 19 (2017) 9128


T. Schultz, T. Lenz, N. Kotadiya, G. Heimel, G. Glasser, R. Berger, P. W. M. Blom, P. Amsalem, D. M. de Leeuw, N. Koch
Reliable work function determination of multicomponent surfaces and interfaces: The role of electrostatic potentials in ultraviolet photoelectron spectroscopy
Adv. Mater. Interfaces 4 (2017) 1700324


C.M. Wolff, F. Zu, A. Paulke, L.P. Toro, N. Koch, D. Neher
Reduced interface-mediated recombination for high open-circuit voltages in CH3NH3PbI3 solar cells
Adv. Mater. 29 (2017) 1700159


M. Dohr, H.M.A. Ehmann, A.O.F. Jones, I. Salzmann, Q. Shen, C. Teichert, C. Ruzie, G. Schweicher, Y. H. Geerts, R. Resel, M. Sferrazza, O. Werzer
Reversibility of temperature driven discrete layer-by-layer formation of dioctyl-benzothieno-benzothiophene films
Soft Matter 13 (2017) 2322


A.O.F. Jones, C. Röthel, R. Lassnig, O.N. Bedoya-Martinez, P. Christian, I. Salzmann, B. Kunert, A. Winkler
Solution of an elusive pigment crystal structure from a thin film: a combined X-ray diffraction and computational study
Cryst. Eng. Comm. 19 (2017) 1902


S. Pachmajer, A.O.F. Jones, M. Truger, C. Röthel, I. Salzmann, O. Werzer, R. Resel
Self-limited growth in pentacene thin films.
ACS Appl. Mater. Interfaces 9 (2017) 11977


F.-S. Zu, P. Amsalem, I. Salzmann, R.-B. Wang, M. Ralaiarisoa, S. Kowarik, S. Duhm, N. Koch
Impact of white light illumination on the electronic and chemical structures of mixed halide and single crystal perovskites
Adv. Optical Mater. 5 (2017) 1700139


L. Pithan, P. Beyer, L. Bogula, A. Zykov, P. Schäfer, J. Rawle, C. Nicklin, A. Opitz, S. Kowarik
Direct photoalignment and pptical patterning of molecular thin film
Adv. Mater. 29 (2017) 1604382


A. Opitz
Energy level alignment at planar organic heterojunctions: influence of contact doping and molecular orientation
J. Phys.: Condens. Matter 29 (2017) 133001


S.D. Chavhan, R. Hansson, L.K.E. Ericsson, P. Beyer, A. Hofmann, W. Brütting, A. Opitz, E. Moons
Low temperature processed NiOx hole transport layers for efficient polymer solar cells
Org. Electron. 44 (2017) 59


G. Ligorio, M. V. Nardi, N. Koch
Lithography-free miniaturization of resistive nonvolatile memory devices to the 100 nm scale by glancing angle deposition
Nano Lett. 17 (2017) 1149


M. Ralaiarisoa, Y. Busby, J. Frisch, I. Salzmann, J.-J. Pireauxb, N. Koch
Correlation of annealing time with crystal structure, composition, and electronic properties of CH3NH3PbI3-xClx mixed-halide Perovskite films
Phys. Chem. Chem. Phys. 19 (2017) 828


A.V. Talyzin, G. Mercier, A. Klechikov, M. Hedenström, D. Johnels, D. Wei, D. Cotton, A. Opitz, E. Moons
Brodie vs Hummers graphite oxides for preparation of multi-layered materials
Carbon 115 (2017) 430



M. Truger, A.O.F. Jones, A.M. Coclite, S. Pachmajer, D. Kriegner, C. Röthel, J. Simbrunner, I. Salzmann, R. Resel
Crystallization of Tyrian purple (6,6 ‘-dibromoindigo) thin films: The impact of substrate surface modifications
J. Cryst. Growth 447 (2016) 73


O. Kettner, A. Pein, G. Trimmel, P. Christian, C. Röthel, I. Salzmann, R. Resel, G. Lakhwani, F. Lombeck, M. Sommer, B. Friedel
Mixed side-chain geometries for aggregation control of poly(fluorene-alt-bithiophene) and their effects on photophysics and charge transport
Synth. Metals 220 (2016) 162


M. Truger, O. M. Roscioni, C. Röthel, D. Kriegner, C. Simbrunner, R. Ahmed, E.D. Głowacki, J. Simbrunner, I. Salzmann, A.M. Coclite, A.O.F. Jones, R. Resel
Surface-induced phase of tyrian purple (6,6′-Dibromoindigo): thin film formation and stability
Cryst. Growth Des. 16 (2016) 3647


A. Yang, A. Franco-Cañellas, M. Sato, B. Wang, R.-B. Wang, H. Koike, I. Salzmann, P. K. Thakur, T.-L. Lee, L. Liu, S. Kera, A. Gerlach, K. Kanai, J. Fan, F. Schreiber, S. Duhm
Nitrogen substitution impacts organic-metal interface energetics
Phys. Rev B 94 (2016) 155426


T. Hao, Y. Xiong, F. Zu, Y. Zhao, X. Wang, Q. Fu, J. Jie, J. Yang, D. Xu
Length-dependent thermal transport in one-dimensional self-assembly of planar pi-conjugated molecule
Nanoscale 8 (2016) 11932


T. Schultz, R. Schlesinger, N. Koch
Energy level tuning at inorganic/organic semiconductor heterojunctions
Proc. SPIE 9923 (2016) 99230E


R.M. Silva, G. Clavel, Y. Fan, P. Amsalem, N. Koch, R.F. Silva, N. Pinna
Coating of vertically aligned carbon nanotubes by a novel manganese oxide atomic layer deposition process for dinder-free hybrid capacitors
Adv. Mater. Interfaces 3 (2016) 21


N. K. Reddy, S. Winkler, N. Koch, N. Pinna
Electrochemical Water Oxidation of Ultrathin Cobald Oxide-Based Catalyst Supported onto Aligned ZnO Nanorods
ACS Appl. Mater. Interfaces 8 (2016) 3226


Y. Nakayama, Y. Mizuno, T. Hosokai, T. Koganezawa, R. Tsuruta, A. Hinderhofer, A. Gerlach, K. Broch, V. Belova, H. Frank, M. Yamamoto, J. Niederhausen, H. Glowatzki, J.P. Rabe, N. Koch, H. Ishii, F. Schreiber, N. Ueno
Epitaxial Growth of an Organic p–n Heterojunction: C60 on Single-Crystal Pentacene
ACS Appl. Mater. Interfaces 8 (2016) 13499


J. Niederhausen, H. R. Kersell, C. Christodoulou, G. Heimel, H. Wonneberger, K. Müllen, J. P. Rabe, S.-W. Hla, and N. Koch
Monolayer phases of a dipolar perylene derivative on Au(111) and surface potential built-up in multilayers
Langmuir 32 (2016) 3587


G. Heimel
The optical signature of charges in conjugated polymers
ACS Cent. Sci. 2 (2016) 309


P. Christian,C. Röthel, M. Tazreiter, A. Zimmer, I. Salzmann, R. Resel, O. Werzer  
Crystallization of Carbamazepine in proximity to its precursor Iminostilbene and a Silica surface
Cryst. Growth Des. 16 (2016) 2771


R. Resel, M. Bainschab, A. Pichler, T. Dingemans, C. Simbrunner, J. Stangl, I. Salzmann 
Multiple scattering in grazing-incidence X-ray diffraction: Impact on lattice-constant determination in thin films
J. Synchrotron Radiat. 23 (2016) 729


T. Schultz, R. Schlesinger, J. Niederhausen, F. Henneberger, S. Sadofev, S. Blumstengel, A. Vollmer, F. Bussolotti, J.-P. Yang, S. Kera, K. Parvez, N. Ueno, K. Müllen, N. Koch
Tuning the work function of GaN with organic molecular acceptors
Phys. Rev. B 93 (2016) 125309


R. Hansson, C. Lindqvist, L.K.E. Ericsson, A. Opitz, E. Wang, E. Moons
Photo-degradation in air of the active layer components in a thiophene-quinoxaline copolymer:fullerene solar cell
Phys. Chem. Chem. Phys. 18 (2016) 11132


S. Käbisch, M. Timpel, H. Kirmse, M.A. Gluba, N. Koch, N.H. Nickel
Polarity of pulsed laser deposited ZnO nanostructures
Appl. Phys. Lett. 108 (2016) 083114


A. Opitz, A. Wilke, P. Amsalem, M. Oehzelt, R.-P. Blum, J.P. Rabe, T. Mizokuro, U. Hörmann, R. Hansson, E. Moons, N. Koch
Organic heterojunctions: Contact-induced molecular reorientation, interface states, and charge re-distribution

Sci. Rep. 6 (2016) 21291


I. Salzmann, G. Heimel, M. Oehzelt, S. Winkler, N. Koch 
Molecular electrical doping of organic semiconductors: Fundamental mechanisms and emerging dopant design rules
Acc. Chem. Res. 49 (2016) 370


K. Akaike, M. V. Nardi, M. Oehzelt, J. Frisch, A. Opitz, C. Christodoulou, G. Ligorio, P. Beyer, M. Timpel, I. Pis, F. Bondino, K. Moudgil, S. Barlow, S. R. Marder, N. Koch
Effective work function reduction of practical electrodes using an organometallic dimer
Adv. Funct. Mater. 26 (2016) 2493



Y. Ito, C. Christodoulou, M. V. Nardi, N.Koch, M. Kläui, H. Sachdev, K. Müllen 
Tuning the Magnetic Properties of Carbon by Nitrogen Doping of its Graphene Domains
J. Am. Chem. Soc. 137 (2015) 7678


C. Christodoulou, A. Giannakopoulos, G. Ligorio, M. Oehzelt, M. Timpel, J.Niederhausen, L. Pasquali, A. Giglia, K. Parvez, K. Müllen, D. Beljonne, N. Koch, M. V. Nardi
Tuning the Electronic Structure of Graphene by Molecular Dopants: Impact of the Substrate
ACS Appl. Mater. Interfaces 7 (2015) 19134


G. Ligorio, M.V. Nardi, C.  Christodoulou, N. Koch
Organic semiconductor/gold interface interactions: from physisorption on planar surfaces to chemical reactions with metal nanoparticles
ChemPhysChem 16 (2015) 2602


D. Reischl, C. Röthel, P. Christian, E. Roblegg, H. M. A. Ehmann, I. Salzmann, O. Werzer
Surface-Induced Polymorphism as a Tool for Enhanced Dissolution: The Example of Phenytoin
Cryst. Growth Des. 15 (2015) 4687


M. Oehzelt, K. Akaike, N. Koch, G. Heimel
Energy-level alignment at organic heterointerfaces
Sci. Adv. Mater. 1 (2015) 1501127


L. Pithan, E. Meister, C. Jin, C. Weber, A. Zykov, K. Sauer, W. Brütting, H. Riegler, A. Opitz, S. Kowarik
Thermally driven smoothening of molecular thin films: Structural transitions in n-alkane layers studied in real-time
J. Chem. Phys 143 (2015) 164707


H. Méndez, G. Heimel, S. Winkler, J. Frisch, A. Opitz, K. Sauer, B. Wegner, M. Oehzelt, C. Röthel, S. Duhm, D. Többens, N. Koch, I. Salzmann
Charge-transfer crystallites as molecular electrical dopants
Nat. Commun. 6 (2015) 8560


S. Yu, J. Frisch, A. Opitz, E. Cohen, M. Bendikov, N. Koch, I. Salzmann
Effect of molecular electrical doping on polyfuran based photovoltaic cells
Appl. Phys. Lett. 106 (2015) 203301


B. Scherwitzl, C. Röthel, A.O.F. Jones, B. Kunert, I. Salzmann, R. Resel, G. Leising, A. Winkler
Idiosyncrasies of physical vapor deposition processes from various knudsen cells for quinacridone thin film growth on silicon dioxide
J. Phys. Chem. C 119 (2015) 20900


D. Reischl, C. Röthel, P. Christian, E. Roblegg, H.M.A. Ehmann, I. Salzmann, O. Werzer
Surface-induced polymorphism as a tool for enhanced dissolution: the example of phenytoin
Cryst. Growth Des. 15 (2015) 4687


C. Musumeci, I. Salzmann, S. Bonacchi, C. Röthel, S. Duhm, N. Koch, P. Samorì
The relationship between structural and electrical characteristics in perylenecarboxydiimide-based nanoarchitectures
Adv. Funct. Mater. 25 (2015) 2501


N. Abedi, P. Herrmann, G. Heimel
Methanol on ZnO (1010): From adsorption over initial dehydrogenation to monolayer formation
J. Phys. Chem. C 119 (2015) 21574


P. Amsalem, G. Heimel, M. Oehzelt, N. Koch
The interface electronic properties of organic photovoltaic cells
J. Electron. Spectrosc. Relat. Phenom. 204 (2015) 177


I. Salzmann, G. Heimel
Toward a comprehensive understanding of molecular doping organic semiconductors (review)
J. Electron. Spectrosc. 204 (2015) 208


S. Grob, A.N. Bartynski, A. Opitz, M. Gruber, F. Grassl, E. Meister, T. Linderl, U. Hörmann, C. Lorch, E. Moons, F. Schreiber, M.E. Thompson, W. Brütting
Solvent vapor annealing on perylene-based organic solar cells
J. Mater. Chem. A 3 (2015) 15700


S. Winkler, P. Amsalem, J. Frisch, M. Oehzelt, G. Heimel, N. Koch
Probing the energy levels in hole-doped molecular semiconductors
Mater. Horizons 2 (2015) 427


R. Schlesinger, F. Bianchi, S. Blumstengel, C. Christodoulou, R. Ovsyannikov, B. Kobin, K. Moudgil, S. Barlow, S. Hecht, S.R. Marder, F. Henneberger, N. Koch
Efficient light emission from inorganic and organic semiconductor hybrid structures by energy-level tuning
Nat. Commun. 6 (2015) 6754


R. Hansson, L.K.E. Ericsson, N.P. Holmes, J. Rysz, A. Opitz, M. Campoy-Quiles, E. Wang, M.G. Barr, A.L.D. Kilcoyne, X. Zhou, P. Dastoor and E. Moons
Vertical and lateral morphology effects on solar cell performance for a thiophene-quinoxaline copolymer:PC70BM blend
J. Mater. Chem. A 3 (2015) 6970


F. Ghani, A. Opitz, P. Pingel, G. Heimel, I. Salzmann, J. Frisch, D. Neher, A. Tsami, U. Scherf, N. Koch
Charge transfer in and conductivity of molecularly doped thiophene-based copolymers
J. Polym. Sci. Pt. B-Polym. Phys.  53 (2015) 58


G. Lu, N. Koch, D. Neher
In-situ tuning threshold voltage of field-effect transistors based on blends of poly(3-hexylthiophene) with an insulator electret
Appl. Phys. Lett. 107 (2015)063301


E. Handick, P. Reinhard, J.-H. Alsmeier, L. Koehler, F. Pianezzi, S. Krause, M. Gorgoi, E. Ikenaga, N. Koch, R. G. Wilks, S. Buecheler, A. N. Tiwari, M. Bär
Potassium Postdeposition Treatment-Induced Band Gap Widening at Cu(In,Ga)Se2 Surfaces - Reason for Performance Leap?
ACS Appl. Mater. Interfaces 7 (2015) 27414


F. Piersimoni, R. Schlesinger, J. Benduhn, D. Spoltore, S. Reiter, I. Lange, N. Koch, K. Vandewal, D. Neher
Charge Transfer Absorption and Emission at ZnO/Organic Interfaces
J. Phys. Chem. Lett. 6 (2015) 500


M. Timpel, M. V. Nardi, G. Ligorio, B. Wegner, M. Paetzel, B. Kobin, S. Hecht, N. Koch
Energy-Level Engineering at ZnO/Oligophenylene Interfaces with Phosphonate-Based Self-Assembled Monolayers
ACS Appl. Mater. Interfaces 7 (2015) 11900


M. Brendel, S. Krause, A. Steindamm, A. K. Topczak, S. Sundarraj, P. Erk, S. Höhla, N. Fruehauf, N. Koch, J. Pflaum
The Effect of Gradual Fluorination on the Properties of FnZnPc Thin Films and FnZnPc/C60 Bilayer Photovoltaic Cells
Adv. Funct. Mater. 25 (2015) 1565


F. Anger, H. Glowatzki, A. Franco-Canellas, C. Burker, A. Gerlach, R. Schoz, Y. Sakamoto, T. Suzuki, N. Koch, F. Schreiber
Interface Dipole and Growth Mode of Partially and Fully Fluorinated Rubrene on Au(111) and Ag(111)
J. Phys. Chem. C 119 (2015) 6769


M. Zellmeier, J. Rappich, M. Klaus, C. Genzel, S. Janietz, J. Frisch, N. Koch, N. H. Nickel
Side chain engineering of poly-thiophene and its impact on crystalline silicon based hybrid solar cells
Appl. Phys. Lett. 107 (2015) 203301


K. Akaike, N. Koch, G. Heimel, M. Oehzelt
The Impact of Disorder on the Energy Level Alignment at Molecular Donor-Acceptor Interfaces
Adv. Mater. Interfaces 2 (2015)



Z. Y. Xia, G. Giambastiani, C. Christodoulou, M. V. Nardi, N. Koch, E. Treossi, V. Bellani, S. Pezzini, F. Corticelli, V. Morandi, A. Zanelli, V. Palermo
Synergic exfoliation of graphene with organic molecules and inorganic ions for the electrochemical production of flexible electrodes
ChemPlusChem 79 (2014) 439


G. Ligorio, M. V. Nardi, C. Christodoulou, I. Florea, N. C. Monteiro, O. Ersen, M. Brinkmann,N. Koch
Charging and exciton-mediated decharging of metal nanoparticles in organic semiconductor matrices
Appl. Phys. Lett. 104 (2014) 163302


M. Timpel, M.V. Nardi, S. Krause, G. Ligorio, C. Christodoulou, L. Pasquali, A. Giglia, J. Frisch, B. Wegner, P. Moras, N. Koch
Surface Modification of ZnO(0001)–Zn with Phosphonate-Based Self-Assembled Monolayers: Binding Modes, Orientation, and Work Function
Chem. Mater. 26 (2014) 5042


K.-H. Dostert, C.P. O'Brien, W. Riedel, A. Savara, W. Liu, M. Oehzelt, A. Tkatchenko, S. Schauermann
Interaction of Isophorone with Pd(111): A combination of infrared reflection-absorption spectroscopy, Near-Edge X-ray Absorption Fine Structure, and Density Functional Theory studies
J. Phys. Chem. C 118 (2014) 27833


K. Akaike, N. Koch, M. Oehzelt
Fermi level pinning induced electrostatic fields and band bending at organic heterojunctions
Appl. Phys. Lett. 105 (2014) 223303


U. Hörmann, C. Lorch, A. Hinderhofer, A. Gerlach, M. Gruber, J. Kraus, B. Sykora, S. Grob, T. Linderl, A. Wilke, A. Opitz, R. Hansson, A.S. Anselmo, Y. Ozawa, Y. Nakayama, H. Ishii, N. Koch, E. Moons, F. Schreiber, W. Brütting
Voc from a morphology point of view: the influence of molecular orientation on the open circuit voltage of organic planar heterojunction solar cells
J. Phys. Chem. C 118 (2014) 26462


A. Pichler, R. Resel, A. Neuhold, T. Dingemans, G. Schwabegger, M. Moret, C. Simbrunner, I. Salzmann
Crystal structure determination of organic thin-films: the example of 2,2′:6′,2′′-ternaphthalene
Z. Kristallogr. 229 (2014) 385


A. Ciesielski, S. Haar, M. El Gemayel, H. Yang, J. Clough, G. Melinte, M. Gobbi, E. Orgiu, M. V. Nardi, G. Ligorio, V. Palermo, N. Koch, O. Ersen, C. Casiraghi, P. Samorì
Harnessing the liquid-phase exfoliation of Graphene using aliphatic compounds: a supramolecular approach
Angew. Chem.-Int. Ed. 53 (2014) 10355


S. Yu, A. Opitz, S. Grob, R. Resel, M. Oehzelt, W. Brütting, I. Salzmann, N. Koch
Performance enhancement of diindenoperylene-based organic photovoltaic cells by nanocolumn-arrays
Org. Electron. 15 (2014) 2210


M. Oehzelt, N. Koch, G. Heimel
Organic semiconductor density of states controls the energy level alignment at electrode interfaces
Nat. Commun. 5 (2014) 4174


S. Winkler, J. Frisch, P. Amsalem, S. Krause, M. Timpel, M. Stolte, F. Würthner, N. Koch
Impact of Molecular Dipole Moments on Fermi Level Pinning in Thin Films
J. Phys. Chem. C 118 (2014) 11731


C. Christodoulou, A. Giannakopoulos, M. V. Nardi, G. Ligorio, M. Oehzelt, L. Chen, L. Pasquali, M. Timpel, A. Giglia, S. Nannarone, P. Norman, M. Linares, K. Parvez, K. Müllen, D. Beljonne, N. Koch
Tuning the work function of Graphene-on-quartz with a high weight molecular acceptor
J. Phys. Chem. C 118 (2014) 4784


J. Niederhausen, S. Duhm, G. Heimel, C. Bürker, Q. Xin, A. Wilke, A. Vollmer, F. Schreiber, S. Kera, J. P. Rabe, N. Ueno, N. Koch
Seleno groups control the energy-level alignment between conjugated organic molecules and metals
J. Chem. Phys. 140 (2014) 014705


H. Wang, P. Amsalem, G. Heimel, I. Salzmann, N. Koch, M. Oehzelt
Band-Bending in Organic Semiconductors: the Role of Alkali-Halide Interlayers
Adv. Mater. 26 (2014) 925


M. Castellani, S. Winkler, B. Bröker, M. Baumgarten, K. Müllen, N. Koch 
Work function increase of transparent conductive electrodes by solution processed electron acceptor molecular monolayers
Appl. Phys. A 114 (2014) 291


C. Christodoulou, A. Giannakopoulos, M. V. Nardi, G. Ligorio, M. Oehzelt, L. Chen, G. Heimel, R. Ovsyannikov, L. Pasquali, M. Timpel, O. Monti, A. Giglia, S. Nannorone, K. Parvez, M. Linares, P. Norman, K. Muellen, D. Beljonne, N. Koch
Workfunction tuning of graphene with organic molecules
Abstr. Pap. Am. Chem. Soc. 247 (2014) 543


F. Bianchi, S. Sadofev, R. Schlesinger, B. Kobin, S. Hecht, N. Koch, F. Henneberger, S. Blumstengel
Cascade energy transfer versus charge seperation in ladder-type oligo(p-phenylene)/ZnO hybrid structures for light-emitting applications
Appl. Phys. Lett. 105 (2014) 233301


Y. Ito, C. Christodoulou, M. V. Nardi, N. Koch, H. Sachdev, K. Muellen
Chemical Vapor Deposition of N-Doped Graphene and Carbon Films: The Role of Precursors and Gas Phase
ACS Nano 8 (2014) 3337



S. Nau, R. Trattnig, L. Pevzner, M. Jäger, R. Schlesinger, M. V. Nardi, G. Ligorio, C. Christodoulou, N. Schulte, S. Winkler, J. Frisch, A. Vollmer, M. Baumgarten, S. Sax, N. Koch, K. Müllen, E. J. W. List–Kratochvil
All solution processed blue multi-layer light emitting diodes realized by thermal layer stabilization and orthogonal solvent processing
Proc. SPIE 8829 (2013) 88290Z


R. Trattnig, L. Pevzner, M. Jäger, R. Schlesinger, M. V. Nardi, G. Ligorio, C. Christodoulou, N. Koch, M. Baumgarten, K. Müllen, E. J. W. List
Bright blue solution processed triple-layer polymer light-emitting diodes realized by thermal layer stabilization and orthogonal solvents
Adv. Funct. Mater. 23 (2013) 4897


C. Schwarz, S. Tscheuschner, J. Frisch, S. Winkler, N. Koch, H. Bässler, A. Köhler
Role of the effective mass and interfacial dipoles on exciton dissociation in organic donor-acceptor solar cells
Phys. Rev. B 87 (2013) 155205


Y. Nakayama, J. Niederhausen, S. Machida, Y. Uragami, H. Kinjo, A. Vollmer, J.P. Rabe, N. Koch, H. Ishii
Valence band structure of rubrene single crystals in contact with an organic gate dielectric
Org. Electron. 14 (2013) 1825


S. Duhm, C. Bürker, J. Niederhausen, I. Salzmann, T. Hosokai, J. Duvernay, S. Kera, F. Schreiber, N. Koch, N. Ueno, A. Gerlach
Pentacene on Ag(111): Correlation of Bonding Distance with Intermolecular Interaction and Order
ACS Appl. Mater. Interfaces 5 (2013) 9377


C. Burker, N. Ferri, A. Tkatchenko, A. Gerlach, J. Niederhausen, T. Hosokai, S. Duhm, J. Zegenhagen, N. Koch, F. Schreiber
Exploring the bonding of large hydrocarbons on noble metals: Diindoperylene on Cu(111), Ag(111), and Au(111)
Phys. Rev. B 87 (2013) 165443


S. Nau, N. Schulte, S. Winkler, J. Frisch, A. Vollmer, N. Koch, S. Sax, E.J.W. List
Highly efficient color-stable deep-blue multilayer PLEDs: Preventing PEDOT:PSS-induced interface degradation
Adv. Mater. 25 (2013) 4420


K. Schmoltner, F. Schlütter, M. Kivala, M. Baumgarten, S. Winkler, R. Trattnig, N. Koch,  A. Klug, E. J. W. List, K. Müllen
A heterotriangulene polymer for air-stable organic field-effect transistors
Polym. Chem. 4 (2013) 5337


S. Winkler, J. Frisch, R. Schlesinger, M. Oehzelt, R. Rieger, J. Räder, J.P. Rabe,  K. Müllen, N. Koch
The impact of local work function variations on Fermi level pinning of organic semiconductors
J. Phys. Chem. C 117 (2013) 22285


R. Schlesinger, Y. Xu, O.T. Hofmann, S. Winkler, J. Frisch, J. Niederhausen, A. Vollmer, S. Blumstengel, F. Henneberger, P. Rinke, M. Scheffler, N. Koch
Controlling the work function of ZnO and the energy-level alignment at the interface to organic semiconductors with a molecular electron acceptor
Phys. Rev. B 87 (2013) 155311


Y. Xu, O.T. Hofmann, R. Schlesinger, S. Winkler, J. Frisch, J. Niederhausen, A. Vollmer,  S. Blumstengel, F. Henneberger, N. Koch, P. Rinke, M. Scheffler
Space-charge transfer in hybrid inorganic-organic systems
Phys. Rev. Lett. 111 (2013) 226802


A. Opitz, J. Frisch, R. Schlesinger, A. Wilke, N. Koch
Energy level alignment at interfaces in organic photovoltaic devices
J. Electron. Spectrosc. Relat. Phenom.190 (2013) 12


M. Dohr, O. Werzer, Q. Shen, I. Salzmann, C. Teichert, C. Ruzie, G. Schweicher, Y. H. Geerts, M. Sferrazza, R. Resel
Dynamics of monolayer-island transitions in 2,7-dioctyl-benzothienobenzthiophene thin films
Chem. Phys. Chem. 14 (2013) 2554


H. Méndez, G. Heimel, A. Opitz, K. Sauer, P. Barkowski, M. Oehzelt, J. Soeda, T. Okamoto, J. Takeya, J.-B. Arlin, J.-Y. Balandier, Y. Geerts, N. Koch, I. Salzmann
Doping of organic semiconductors: Impact of dopant strength and electronic coupling
Angew. Chem.-Int. Edit. 52 (2013) 7751


A. Moser, I. Salzmann, M. Oehzelt, A. Neuhold, H.-G. Flesch, J. Ivanco, S. Pop, T. Toader, D.R.T. Zahn, D.-M. Smilgies, R. Resel
A disordered layered phase in thin films of sexithiophene
Chem. Phys. Lett. 574 (2013) 51


A. Ringk, W.S.C. Roelofs, E.C.P. Smits, C. van der Marel, I. Salzmann, A. Neuhold, G.H. Gelinck, R. Resel, D.M. de Leeuw, P. Strohriegl
N-Type self-assembled monolayer field-effect transistors for flexible organic electronics
Org. Electron. 14 (2013) 1297


O. Werzer, B. Kunert, E. Roblegg, A. Zimmer, M. Oehzelt, R. Resel
Surface induced order of solution processed caffeine needles on silica and muscovite mica
Cryst. Growth Des. 13 (2013) 1322


G. Lu, J. Blakesley, S. Himmelberger, P. Pingel, J. Frisch, I. Lieberwirth, I. Salzmann, M. Oehzelt, R. Di Pietro, A. Salleo, N. Koch, D. Neher
Moderate doping leads to high performance of semiconductor/insulator polymer blend transistors
Nat. Commun. 4 (2013) 1588


A. Paris, N. Verbitskiy, A. Nefedov, Y. Wang, A. Fedorov, D. Haberer, M. Oehzelt, L. Petaccia, D. Usachov, D. Vyalikh, H. Sachdev, C. Wöll, M. Knupfer, B. Büchner, L. Calliari, L. Yashina, S. Irle, A. Grüneis 
Kinetic isotope effect in the hydrogenation and deuteration of graphene
Adv. Funct. Mater. 23 (2013) 1628


V. Scenev, P. Cosseddu, A. Bonfiglio, I. Salzmann, N. Severin, M. Oehzelt, N. Koch, J.P. Rabe
Origin of mechanical strain sensitivity of pentacene thin-film transistors
Org. Electron. 14 (2013) 1323


L. Masson, H. Sahaf, P. Amsalem, F. Dettoni, E. Moyen, N. Koch, M. Hanbücken
Nanoscale Si template for the growth of self-organized one-dimensional nanostructures
Appl. Surf. Sci. 267 (2013) 192


E. Salomon, P. Amsalem, N. Marom, M. Vondracek, L. Kronik, N. Koch, T. Angot
Electronic structure of CoPc adsorbed on Ag(100): Evidence for molecule-substrate interaction mediated by Co 3d orbitals
Phys. Rev. B 87 (2013) 075407


G. Heimel, S. Duhm, I. Salzmann, A. Gerlach, A. Strozecka, J. Niederhausen, C. Bürker, T. Hosokai, I. Fernandez-Torrente, G. Schulze, S. Winkler, A. Wilke, R. Schlesinger, J. Frisch, B. Bröker, A. Vollmer, B. Detlefs, J. Pflaum, S. Kera, K. J. Franke, N. Ueno, J. I. Pascual, F. Schreiber, N. Koch
Charged and metallic molecular monolayers through surface-induced aromatic stabilization
Nat. Chem. 5 (2013) 187


P. Amsalem, J. Niederhausen, A. Wilke, G. Heimel, R. Schlesinger, S. Winkler, A. Vollmer, J. P. Rabe, N. Koch
Role of charge transfer, dipole-dipole interactions, and electrostatics in Fermi-level pinning at a molecular heterojunction on a metal surface
Phys. Rev. B 87 (2013) 035440


L. Giovanelli, F. C. Bocquet, P. Amsalem, H.-L. Lee, M. Abel, S. Clair, M. Koudia, T. Faury, L. Petaccia, D. Topwal, E. Salomon, T. Angot, A. A. Cafolla, N. Koch, L. Porte, A. Goldoni, J.-M. Themlin
Interpretation of valence band photoemission spectra at organic-metal interfaces
Phys. Rev. B 87 (2013) 035413


M. Scheffler, W. Liu, J. Carrasco, B. Santra, A. Michaelides, A. Tkatchenko, R. Schlesinger, Y. Xu, O. T. Hofmann, S. Winkler, J. Frisch, J. Niederhausen, A. Vollmer, S. Blumstengel, P. Rinke, F. Henneberger, N. Koch
Adsorption of organic molecules at metal and metal-oxide surfaces: Theoretical challenges, concepts, and insights
Abstr. Pap. Am. Chem. Soc. 245 (2013)


G. Schwabegger, M. Oehzelt, I. Salzmann, F. Quochi, M. Saba, A. Mura, G. Bongiovanni, A. Vollmer, N. Koch, H. Sitter, C. Simbrunner
Interface Properties of Organic para-Hexaphenyl/α-Sexithiophene Heterostructures Deposited on Highly Oriented Pyrolytic Graphite
Langmuir 29 (2013) 14444


J. Frisch, M. Herder, P. Herrmann, G. Heimel, S. Hecht, N. Koch
Photoinduced reversible changes in the electronic structure of photochromic diarylethene films
Appl. Phys. A 113 (2013) 1


S. Kabisch, M. A. Gluba, C. Klimm, S. Krause, N. Koch, N. H. Nickel
Polarity driven morphology of zinc oxide nanostructures
Appl. Phys. Lett. 103 (2013) 103106


S. Krause, M. Stolte, F. Würthner, N. Koch
Influence of Merocyanine Molecular Dipole Moments on the Valence Levels in Thin Films and the Interface Energy Level Alignment with Au(111)
J. Phys. Chem. C 117 (2013) 19031



H. Glowatzki, G. Heimel, A. Vollmer, S. L. Wong, H. Huang, W. Chen, A. T. S. Wee, J. P. Rabe, N. Koch
Impact of Fluorination on Initial Growth and Stability of Pentacene on Cu(111)
J. Phys. Chem. C 116(14) (2012) 7726


E. Orgiu, N. Crivillers, M. Herder, L. Grubert, M. Pätzel, J. Frisch, E. Pavlica, D.T. Duong, G. Bratina, A. Salleo, N. Koch, S. Hecht, P. Samorì
Optically switchable transistor via energy-level phototuning in a bicomponent organic semiconductor
Nat. Chem. 4 (2012) 675


S. Fladischer, A. Neuhold, E. Kraker, T. Haber, B. Lamprecht, I. Salzmann, R. Resel, W. Grogger
Diffusion of Ag into Organic Semiconducting Materials: A Combined Analytical Study Using Transmission Electron Microscopy and X-ray Reflectivity
ACS Appl. Mater. Interfaces  4 (2012) 5608


M. Defaux, F. Gholamrezaie, J. Wang, A. Kreyes, U. Ziener, D. V. Anokhin, D. A. Ivanov, A. Moser, A. Neuhold, I. Salzmann, R. Resel, D. M. de Leeuw, S. C. J. Meskers, M. Moeller, A. Mourran
Solution-Processable Septithiophene Monolayer Transistor
Adv. Mater. 24 (2012) 973


I. Salzmann, A. Moser, M. Oehzelt, T. Breuer, X. Feng, Z.-Y. Juang, D. Nabok, R. G. D. Valle, S. Duhm, G. Heimel, A. Brillante, E. Venuti, I. Bilotti, C. Christodoulou, J. Frisch, P. Puschnig, C. Draxl, G. Witte, K. Müllen, N. Koch
Epitaxial Growth of π‑Stacked Perfluoropentacene on Graphene-Coated Quartz
ACS Nano (2012) 10874


A. Wilke, J. Endres, U. Hörmann, J. Niederhausen, R. Schlesinger, J. Frisch, P. Amsalem, J. Wagner, M. Gruber, A. Opitz, A. Vollmer, W. Brütting, A. Kahn, N. Koch
Correlation between interface energetics and open circuit voltage in organic photovoltaic cells
Appl. Phys. Lett. 101 (2012) 233301


N. Koch
Electronic structure of interfaces with conjugated organic materials
Phys. Status Solidi-Rapid Res. Lett. 6 (2012) 277


D. A. Egger, F. Rissner, E. Zojer, G. Heimel
Polarity switching of charge transport and thermoelectricity in self-assembled monolayer devices
Adv. Mater. 24 (2012) 4403


J. Niederhausen, P. Amsalem, A. Wilke, R. Schlesinger, S. Winkler, A. Vollmer, J. P. Rabe, N. Koch
Doping of C60 monolayers by Fermi-level pinning induced electron transfer
Phys. Rev. B 86 (2012) 081411


C. Simbrunner, G. Hernandez-Sosa, F. Quochi, G. Schwabegger, C. Botta, M. Oehzelt, I. Salzmann, T. Djuric, A. Neuhold, R. Resel, M. Saba, A. Mura, G. Bongiovanni, A. Vollmer, N. Koch, H. Sitter
Color tuning of nanofibers by periodic organic-organic hetero-epitaxy
ACS Nano 6 (2012) 4629


B. Wedl, R. Resel, G. Leising, B. Kunert, I. Salzmann, M. Oehzelt, N. Koch, A. Vollmer, S. Duhm, O. Werzer, G. Gbabode, M. Sferrazza, Y. Geerts
Crystallisation kinetics in thin films of dihexyl-terthiophene: The appearance of polymorphic phases
RSC Adv. 2 (2012) 4404


A. Vollmer, R. Ovsyannikov, M. Gorgoi, S. Krause, M. Oehzelt, A. Lindblad, N. Mårtensson, S. Svensson, P. Karlsson, M. Lundvuist, T. Schmeiler, J. Pflaum, N. Koch
Two dimensional band structure mapping of organic single crystals using the new generation electron energy analyzer ARTOF
J. Electron Spectrosc. Relat. Phenom.185 (2012) 55


M. Neuschitzer, A. Moser, A. Neuhold, J. Kraxner, B. Stadlober, M. Oehzelt, I. Salzmann, R. Resel, J. Novak
Grazing-incidence in-plane X-ray diffraction on ultra-thin organic films using standard laboratory equipment
J. Appl. Cryst. 45 (2012) 367


A. Opitz, M. Horlet, M. Kiwull, J. Wagner, M. Kraus, W. Brütting
Bipolar charge transport in organic field-effect transistors: Enabling high mobilities and transport of photo-generated charge carriers by a molecular passivation layer
Org. Electron. 13 (2012) 1614


I. Salzmann, G. Heimel, S. Duhm, M. Oehzelt, P. Pingel, B. M. George, A. Schnegg, K. Lips, R.-P. Blum, A. Vollmer, N. Koch
Intermolecular hybridization governs molecular electrical doping
Phys. Rev. Lett. 108 (2012) 035502


J. Frisch, M. Schubert, E. Preis, J. P. Rabe, D. Neher, U. Scherf, N. Koch
Full electronic structure across a polymer heterojunction solar cell
J. Mater. Chem. 22 (2012) 4418


M. Schubert, D. Dolfen, J. Frisch, S. Roland, R. Steyrleuthner, B. Stiller, Z. Chen, U. Scherf, N. Koch, A. Facchetti, D. Neher
Influence of Aggregation on the Performance of All-Polymer Solar Cells Containing Low-Bandgap Naphthalenediimide Copolymers
Adv. Energy Mater. 2 (2012) 369


J. Wagner, M. Gruber, A. Wilke, Y. Tanaka, K. Topczak, A. Steindamm, U. Hörmann, A. Opitz, Y. Nakayama, H. Ishii, J. Pflaum, N. Koch, W. Bruetting
Identification of different origins for s-shaped current voltage characteristics in planar heterojunction organic solar cells
J. Appl. Phys. 111 (2012) 054509


J. Frisch, A. Vollmer, N. Koch
Energy level pinning of an n-type semiconducting polymer on conductive polymer electrodes: Effects of work function and annealing
J. Appl. Phys. 112 (2012) 033712


G. Heimel, I. Salzmann, N. Koch
On the Fundamental Processes in Molecular Electrical Doping of Organic Semiconductors
AIP Conf. Proc. 1456 (2012) 148


S. Albrecht, S. Janietz, W. Schindler, J. Frisch, J. Kurpiers, J. Kniepert, S. Inal, P. Pingel, K. Fostiropoulos, N. Koch, D. Neher
Fluorinated Copolymer PCPDTBT with Enhanced Open-Circuit Voltage and Reduced Recombination for Highly Efficient Polymer Solar Cells
J. Am. Chem. Soc. 134 (2012) 14932



M. Malicki, G. Heimel, Z. Guan, S. D. Ha, S. Barlow, A. Kahn, S. R. Marder
Energy-level alignment in 4’-substituted stilbene-4-thiolate self-assembled monolayers on gold
J. Phys. Chem. C 115 (2011) 7487


Z.-Y. Ma, F. Rissner, L.-J. Wang, G. Heimel, Q.-K. Li, Z. Shuai, E. Zojer
Electronic Structure of Pyridine-based SAMs on Flat Au(111) Surfaces: Extended Charge Rearrangements and Fermi Level Pinning
Phys. Chem. Chem. Phys. 13 (2011) 9747


P. Amsalem, A. Wilke, J. Frisch, J. Niederhausen, A. Vollmer, R. Rieger, K. Müllen, J. P. Rabe, N. Koch
Interlayer molecular diffusion and thermodynamic equilibrium in organic heterostructures on a metal electrode
J. Appl. Phys. 110 (2011) 113709


F. C. Bocquet, L. Giovanelli, P. Amsalem, L. Petaccia, D. Topwal, S. Gorikov, M. Abel, N. Koch, L. Porte, A. Goldoni, J. M. Themlin
Final-state diffraction effects in angle-resolved photoemission at an organic-metal interface
Phys. Rev. B 84 (2011) 241407


C. Simbrunner, D. Nabok, G. Hernandez-Sosa, M. Oehzelt, T. Djuric, R. Resel, L. Romaner, P. Puschnig, C. Ambrosch-Draxl, I. Salzmann, G. Schwabegger, I. Watzinger, H. Sitter
Epitaxy of rodlike organic molecules on sheet silicates-A growth model based on experiments and simulations
J. Am. Chem. Soc. 133 (2011) 3056


C. Simbrunner, G. Hernandez-Sosa, M. Oehzelt, T. Djuric, I. Salzmann, M. Brinkmann, G. Schwabegger, I. Watzinger, H. Sitter, R. Resel
Epitaxial growth of sexithiophene on mica surfaces
Phys. Rev. B 83 (2011) 115443


D. Usachov, O. Vilkov, A. Gruneis, D. Haberer, A. Fedorov, V. K. Adamchuk, A. B. Preobrajenski, P. Dudin, A. Barinov, M. Oehzelt,C. Laubschat, D. V. Vyalikh
Nitrogen-doped graphene: Efficient growth, structure, and electronic properties
Nano Lett. 11 (2011) 5401


J. Zhang, Y. Wu, S. Duhm, J. P. Rabe, P. Rudolf, N. Koch
Formation of intra-island grain boundaries in pentacene monolayers
Phys. Chem. Chem. Phys. 13 (2011) 21102


U. Aygül, H. Peisert, J. Frisch, A. Vollmer, N. Koch, T. Chasse
Electronic properties of interfaces between PCPDTBT and prototypical electrodes studied by photoemission spectroscopy
ChemPhysChem 12 (2011) 2345


P. Amsalem, J. Niederhausen, J. Frisch, A. Wilke, B. Bröker, A. Vollmer, R. Rieger, K. Müllen, J. P. Rabe, N. Koch
Metal-to-acceptor charge transfer through a molecular spacer layer
J. Phys. Chem. C 115 (2011) 17503


J. Fraxedas, S. Garcia-Gil, S. Monturet, N. Lorente, I. Fernández-Torrente, K. J. Franke, J. I. Pascual, A. Vollmer, R.-P. Blum, N. Koch, P. Ordejón
Modulation of surface charge transfer through competing long-range repulsive versus short-range attractive interactions
J. Phys. Chem. C 115 (2011) 18640


J. Niederhausen, P. Amsalem, J. Frisch, A. Wilke, A. Vollmer, R. Rieger, K. Müllen, J. P. Rabe, N. Koch
Tuning hole-injection barriers at organic/metal interfaces exploiting the orientation of a molecular acceptor interlayer
Phys. Rev. B 84 (2011) 165302


T. Breuer, I. Salzmann, J. Götzen, M. Oehzelt, A. Morherr, N. Koch, G. Witte
Interrelation between substrate roughness and thin-film structure of functionalized acenes on graphite
Cryst. Growth Des. 11 (2011) 4996


R. Trattnig, T. M. Figueira-Duarte, D. Lorbach, W. Wiedemair, S. Sax, S. Winkler, A. Vollmer, N. Koch, M. Manca, M. A. Loi, M. Baumgarten, E. J. W. List, K. Müllen
Deep blue polymer light emitting diodes based on easy to synthesize, non-aggregating polypyrene
Opt. Express 19 (2011) A1281


E. J. W. List, N. Koch
Focus issue: Organic light-emitting diodes-status quo and current developments
Opt. Express 19 (2011) A1237


S. Yu, C. Klimm, P. Schäfer, J. P. Rabe, B. Rech N. Koch
Organic photovoltaic cells with interdigitated structures based on pentacene nanocolumn arrays
Org. Electron. 12 (2011) 2180


I. Lange, J. C. Blakesley, J. Frisch, A. Vollmer, N. Koch, D. Neher
Band bending in conjugated polymer layers
Phys. Rev. Lett. 106 (2011) 216402


S. Duhm, Q. Xin, N. Koch, N. Ueno, S. Kera
Impact of alkyl side chains at self-assembly, electronic structure and charge arrangement in sexithiophene thin films
Org. Electron. 12 (2011) 903


J. Frisch, A. Vollmer, J. P. Rabe, N. Koch
Ultrathin polythiophene films on an intrinsically conducting polymer electrode: Charge transfer induced valence states and interface dipoles
Org. Electron. 12 (2011) 916


A. Wilke, P. Amsalem, J. Frisch, B. Bröker, A. Vollmer, N. Koch
Electric fields induced by energy level pinning at organic heterojunctions
Appl. Phys. Lett. 98 (2011) 123304


T. Qin, W. Wiedemair, S. Nau, R. Trattnig, S. Sax, S. Winkler, A. Vollmer, N. Koch, M. Baumgarten, E. J. W. List, K. Müllen
Core, shell, and surface-optimized dendrimers for blue light-emitting diodes
J. Am. Chem. Soc. 133 (2011) 1301


S. Käbisch, P. Pingel, J. P. Rabe, N. Koch
Substrate- and oxidation-induced roughness of individual terraces of pentacene thin films
Thin Solid Films 519 (2011) 1857


G. Heimel, I. Salzmann, S. Duhm, N. Koch
Design of organic semiconductors from molecular electrostatics
Chem. Mat. 23 (2011) 359


I. Salzmann, D. Nabok, M. Oehzelt, S. Duhm, A. Moser, G. Heimel, P. Puschnig, C. Ambrosch-Draxl, J. P. Rabe, N. Koch
Structure solution of the 6,13-pentacenequinone surface-induced polymorph by combining X-ray diffraction reciprocal-space mapping and theoretical structure modeling
Cryst. Growth Des. 11 (2011) 600



F. Rissner, D. A. Egger, L. Romaner, G. Heimel, E. Zojer
The electronic structure of mixed self-assembled monolayers
ACS Nano 4 (2010) 6735


G. M. Rangger, L. Romaner, O. T. Hofmann, G. Heimel, M. G. Ramsey, E. Zojer
Analyzing the bonding between conjugated organic molecules and noble metal surfaces using overlap populations
J. Chem. Theory Comput. 6 (2010) 3481


L. J. Wang, G. M. Rangger, Z. Y. Ma, Q. K. Li, Z. Shuai, E. Zojer, G. Heimel
Is there a Au-S bond dipole in self-assembled monolayers on gold?
Phys. Chem. Chem. Phys. 12 (2010) 4287


D. A. Egger, F. Rissner, G. M. Rangger, O. T. Hofmann, L. Wittwer, G. Heimel E. Zojer
Self-assembled monolayers of polar molecules on Au(111) surfaces: Distributing the dipoles
Phys. Chem. Chem. Phys. 12 (2010) 4291


G. Heimel, F. Rissner, E. Zojer
Modeling the electronic properties of Pi-conjugated self-assembled monolayers
Adv. Mater. 22 (2010) 2494


A. M. Track, F. Rissner, G. Heimel, L. Romaner, D. Käfer, A. Bashir, G. M. Rangger, O. T. Hofmann, T. Bucko, G. Witte, and E. Zojer
Simultaneously understanding the geometric and electronic structure of anthraceneselenolate on Au(111): A combined theoretical and axperimental study
J. Phys. Chem. C 114 (2010) 2677


L. Giovanelli, P. Amsalem, T. Angot, L. Petaccia, S. Gorikov, L. Porte, A. Goldoni, J. M. Themlin
Valence band photoemission from the Zn-phthalocyanine/Ag(110) interface: Charge transfer and scattering of substrate photoelectrons
Phys. Rev. B 82 (2010) 125431


L. Kronik, N. Koch
Electronic properties of organic-based interfaces
MRS Bull. 35 (2010) 417


J. Wagner, M. Gruber, A. Hinderhofer, A. Wilke, B. Bröker, J. Frisch, P. Amsalem, A. Vollmer, A. Opitz, N. Koch, F. Schreiber, W. Brütting
High fill factor and open circuit voltage in organic photovoltaic cells with diindenoperylene as donor material
Adv. Funct. Mater. 20 (2010) 4295


B. Bröker, O. T. Hofmann, G. M. Rangger, P. Frank, R. P. Blum, R. Rieger, L. Venema, A. Vollmer, K. Müllen, J. P. Rabe, A. Winkler, P. Rudolf, E. Zojer, N. Koch
Density-dependent reorientation and rehybridization of chemisorbed conjugated molecules for controlling interface electronic structure
Phys. Rev. Lett. 104 (2010) 246805


H. Yamane, A. Gerlach, S. Duhm, Y. Tanaka, T. Hosokai, Y. Y. Mi, J. Zegenhagen, N. Koch, K. Seki, F. Schreiber
Site-specific geometric and electronic relaxations at organic-metal interfaces
Phys. Rev. Lett. 105 (2010) 046103


S. Blumstengel, H. Glowatzki, S. Sadofev, N. Koch, S. Kowarik, J. P. Rabe, F. Henneberger
Band-offset engineering in organic/inorganic semiconductor hybrid structures
Phys. Chem. Chem. Phys. 12 (2010) 11642


P. Frank, T. Djuric, M. Koini, I. Salzmann, R. Rieger, K. Müllen, R. Resel, N. Koch, A. Winkler
Layer growth, thermal stability and desorption behavior of hexaaza-triphenylene-hexacarbonitrile on Ag(111)
J. Phys. Chem. C 114 (2010) 6650


K. Medjanik, D. Kutnyakhov, S. A. Nepijko, G. Schönhense, S. Naghavi, V. Alijani, C. Felser, N. Koch, R. Rieger, M. Baumgarten, K. Müllen
Electronic structure of large disc-type donors and acceptors
Phys. Chem. Chem. Phys. 12 (2010) 7184


J.-O. Vogel, I. Salzmann, S. Duhm, M. Oehzelt, J. P. Rabe, N. Koch
Phase-separation and mixing in thin films of co-deposited rod-like conjugated molecules
J. Mater. Chem. 20 (2010) 4055


A. Opitz, J. Wagner, W. Brütting, I. Salzmann, N. Koch, J. Manara, J. Pflaum, A. Hinderhofer, F. Schreiber
Charge separation at molecular donor-acceptor interfaces: correlation between interface morphology and solar cell performance
IEEE J. Sel. Top. Quant. 16 (2010) 1707


A. Wilke, T. Mizokuro, R. P. Blum, J. P. Rabe, N. Koch
Electronic properties of Cu-phthalocyanine/fullerene planar and bulk hetereojunctions on PEDOT:PSS
Top. Quantum Electron. 16 (2010) 1732


B. Fraboni, R. DiPietro, A. Cavallini, P. Cosseddu, A. Bonfiglio, J.-O. Vogel, J. P. Rabe, N. Koch
Correlating photocurrent spectra and electrical transport parameters in organic field effect transistors
Org. Electron. 11 (2010) 273


S. Duhm, S. Hosoumi, I. Salzmann, A. Gerlach, M. Oehzelt, B. Wedl, T.-L. Lee, F. Schreiber, N. Koch, N. Ueno, S. Kera
Influence of intramolecular polar bonds on interface energetics in perfluoro-pentacene on Ag(111)
Phys. Rev. B 81 (2010) 045418


P. Pingel, L. Zhu, K. S. Park, J.-O. Vogel, S. Janietz, E.-G. Kim, J. P. Rabe, J.-L. Brédas, N. Koch
Charge-Transfer Localization in Molecularly Doped Thiophene-Based Donor Polymers
J. Phys. Chem. Lett. 1 (2010) 2037



F. Rissner, G. M. Rangger, O. T. Hofmann, A. M. Track, G. Heimel, E. Zojer
Understanding vacuum-level alignment and Fermi level pinning at metal/SAM/organic contacts
ACS Nano 3 (2009) 3513


L.-J. Wang, G. M. Rangger, L. Romaner, G. Heimel, T. Bucko, Z.-Y. Ma, Q.-K. Li, Z. Shuai, E. Zojer
Electronic structure of self-assembled monolayers on Au(111) surfaces: The impact of the backbone polarizability
Adv. Funct. Mater. 19 (2009) 3766


G. Heimel, E. Zojer, L. Romaner, J.-L. Brédas, F. Stellacci
Doping molecular wires
Nano Lett. 9 (2009) 2559


M. Malicki, Z. Guan, S. D. Ha, G. Heimel, S. Barlow, M. Rumi, A. Kahn, S. Marder
Preparation and characterization of 4’-donor substituted stilbene-4-thiolate monolayers and their influence on the work function of gold
Langmuir 25 (2009) 7967


B. Bröker, R. P. Blum, L. Beverina, O. T. Hofmann, M. Sassi, R. Ruffo, G. A. Pagani, G. Heimel, A. Vollmer, J. Frisch, J. P. Rabe, E. Zojer, N. Koch
A high molecular weight donor for electron injection interlayers on metal electrodes
ChemPhysChem 10 (2009) 2947


J. Frisch, H. Glowatzki, S. Janietz, N. Koch
Solution-based metal electrode modification for improved charge injection in polymer field-effect transistors
Org. Electron. 10 (2009) 1459


G. Heimel, I. Salzmann, S. Duhm, J. P. Rabe, N. Koch
Intrinsic surface dipoles control the energy levels of conjugated polymers
Adv. Funct. Mater. 19 (2009) 3874


Y. Liang, J. Frisch, L. Zhi, H. Norouzi-Arasi, X. Feng, J. P. Rabe, N. Koch, K. Müllen
Transparent, highly conductive graphene electrodes from acetylene-assisted thermolysis of graphite oxide sheets and nanographene molecules
Nanotechnology 20 (2009) 434007


S. Duhm, I. Salzmann, B. Bröker, H. Glowatzki, R. L. Johnson, N. Koch
Interdiffusion of molecular acceptors through organic layers to metal substrates mimics doping-related energy level shifts
Appl. Phys. Lett. 95 (2009) 093305


M. Castellani, I. Salzmann, P. Bugnon, S. Yu, M. Oehzelt, N. Koch
Structural and electronic implications for carrier injection into organic semiconductors
Appl. Phys. A 97 (2009) 1


X. Cheng, Y.-Y. Noh, J. Wang, M. Tello, J. Frisch, R.-P. Blum, A. Vollmer, J. P. Rabe, N. Koch, H. Sirringhaus
Controlling electron and hole charge injection in ambipolar organic field-effect transistors by self-assembled monolayers
Adv. Funct. Mater. 19 (2009) 2407


S. Duhm, I. Salzmann, R. L. Johnson, N. Koch
Electronic non-equilibrium conditions at C60-pentacene heterostructures
J. Electron. Spectrosc. 174 (2009) 40


P. Frank, N. Koch, M. Koini, R. Rieger, K. Müllen, R. Resel, A. Winkler
Layer growth and desorption kinetics of a discoid molecular acceptor on Au(111)
Chem. Phys. Lett. 473 (2009) 321


G. M. Rangger, O. T. Hofmann, L. Romaner, G. Heimel, B. Bröker, R.-P. Blum, R. L. Johnson, N. Koch, E. Zojer
F4TCNQ on Cu, Ag, and Au as prototypical example for a strong organic acceptor on coinage metals
Phys. Rev. B 79 (2009) 165306


J. Zhang, I. Salzmann, P. Schäfer, M. Oehzelt, S. Duhm, J. P. Rabe, N. Koch
The morphology of organic nanocolumn arrays: amorphous versus crystalline solids
J. Mater. Res. 24 (2009) 1492


Y. Wu, T. Toccoli, J. Zhang, N. Koch, E. Iacob, A. Pallaoro, S. Iannotta, P. Rudolf
Key role of molecular kinetic energy in early stages of pentacene island growth
Appl. Phys. A 95 (2009) 21


A. Vollmer, X. L. Feng, X. Wang, L. J. Zhi, K. Müllen, N. Koch, J. P. Rabe
Electronic and structural properties of graphene-based transparent and conductive thin film electrodes
Appl. Phys. A 94 (2009) 1


S. Duhm, I. Salzmann, G. Heimel, M. Oehzelt, A. Haase, R. L. Johnson, J. P. Rabe, N. Koch
Controlling energy level offsets in organic/organic heterostructures using intramolecular polar bonds
Appl. Phys. Lett. 94 (2009) 033304


G. Heimel, N. Koch
Molecular Orientation Dependence of the Ionization Energy of Pentacene in Thin Films
Springer Proc. Phys.129 (2009) 141


N. Ueno, M. Fahlmann, N. Koch
Special Issue Advanced Spectroscopies of Molecular Materials for Electronics Preface
J. Electron Spectrosc. 174 (2009) 1


P. Cosseddu, J.-O. Vogel, B. Fraboni, J. P. Rabe, N. Koch, A. Bonfiglio
Continuous Tuning of Organic Transistor Operation from Enhancement to Depletion Mode
Adv. Mater. 21 (2009) 344



B. Bröker, R.-P. Blum, J. Frisch, A. Vollmer, O. T. Hofmann, R. Rieger, K. Müllen, J. P. Rabe, E. Zojer, N. Koch
Gold work function reduction by 2.2 eV with an air-stable molecular donor layer
Appl. Phys. Lett. 93 (2008) 243303


L. Romaner, G. Heimel, C. Ambrosch-Draxl, E. Zojer
The dielectric constant of self-assembled monolayers
Adv. Funct. Mater. 18 (2008) 3999


G. Heimel, L. Romaner, E. Zojer, J.-L. Brédas
The interface energetics of self-assembled monolayers on metals
Acc. Chem. Res. 41 (2008) 721


M. Gruber, G. Heimel, L. Romaner, J.-L. Brédas, E. Zojer
A first-principles study of the geometric and electronic structure of Au13 clusters: Importance of the prism motif
Phys. Rev. B 77 (2008) 165411/1


L. Romaner, G. Heimel, E. Zojer
Electronic structure of thiol-bonded self-assembled monolayers: the impact of coverage
Phys. Rev. B 77 (2008) 045113/1


G. Rangger, L. Romaner, G. Heimel, E. Zojer
Understanding the properties of interfaces and organic self-assembled monolayers and noble metals - a theoretical perspective
Surf. Interface Anal. 40 (2008) 371


I. Salzmann, S. Duhm, R. Opitz, R. L. Johnson, J. P. Rabe, N. Koch
Structural and electronic properties of pentacene-fullerene heterojunctions
J. Appl. Phys. 104 (2008) 114518


S. Bange, A. Kuksov, D. Neher, A. Vollmer, N. Koch, A. Ludemann, S. Heun
The role of poly(3,4-ethylenedioxythiophene):poly(styrenesulphonate) as a hole injection layer in a blue-emitting polymer light-emitting diode
J. Appl. Phys. 104 (2008) 104506


N. Severin, S. Groeper, R. Kniprath, H. Glowatzki, N. Koch, I.M. Sokolov, J.P. Rabe
Data scattering in scanning tunneling spectroscopy
Ultramicroscopy 109 (2008) 85


H. Glowatzki, B. Bröker, R.-P. Blum, O. T. Hofmann, A. Vollmer, R. Rieger, K. Müllen, E. Zojer, J. P. Rabe, N. Koch
"Soft" metallic contact to isolated C60 molecules
Nano Lett. 8 (2008) 3825


I. Salzmann, S. Duhm, G. Heimel, M. Oehzelt, R. Kniprath, R. L. Johnson, J. P. Rabe, N. Koch
Tuning the ionization energy of organic semiconductor films: The role of intramolecular polar bonds
J. Am. Chem. Soc. 130 (2008) 12870


J. Zhang, J. P. Rabe, N. Koch
Grain-boundary evolution in a pentacene monolayer
Adv. Mater. 20 (2008) 3254


S. Duhm, I. Salzmann, N. Koch, H. Fukagawa, T. Kataoka, S. Hosoumi, K. Nebashi, S. Kera, N. Ueno
Vacuum sublimed α,ω-dihexylsexithiophene thin films: Correlating electronic structure and molecular orientation
J. Appl. Phys. 104 (2008) 033717


I. Salzmann, S. Duhm, G. Heimel, J. P. Rabe, N. Koch, M. Oehzelt, Y. Sakamoto, T. Suzuki
Structural order in perfluoropentacene thin films and hetero-structures with pentacene
Langmuir 24 (2008) 7294


S. Blumstengel, N. Koch, S. Sadofev, P. Schäfer, H. Glowatzki, R. L. Johnson, J. P. Rabe, F. Henneberger
Interface formation and electronic structure of α-sexithiophene on ZnO
Appl. Phys. Lett. 92 (2008) 193303


S. Duhm, G. Heimel, I. Salzmann, H. Glowatzki, R. L. Johnson, A. Vollmer, J. P. Rabe, N. Koch
Orientation-dependent ionization energies and interface dipoles in ordered molecular assemblies
Nat. Mater. 7 (2008) 326


F. Jäckel, U. G. E. Perera, V. Iancu, K.-F. Braun, N. Koch, J. P. Rabe, S.-W. Hla
Investigating Molecular Charge Transfer Complexes with a Low Temperature Scanning Tunneling Microscope
Phys. Rev. Lett. 100 (2008) 126102


S. Blumstengel, S. Sadofev, C. Xu, J. Puls, R.L. Johnson, H. Glowatzki, N. Koch, F. Henneberger
Electronic coupling in organic-inorganic semiconductor hybrid structures with type-II energy level alignment
Phys. Rev. B 77 (2008) 085323


N. Koch, A. Gerlach, S. Duhm, H. Glowatzki, G. Heimel, A. Vollmer, Y. Sakamoto, T. Suzuki, J. Zegenhagen, J. P. Rabe, F. Schreiber
Adsorption-induced intramolecular dipole: Correlating molecular conformation and interface electronic structure
J. Am. Chem. Soc. 130 (2008) 7300


H. Glowatzki, G. N. Gavrila, S. Seifert, R. L. Johnson, J. Räder, K. Müllen, D. R. T. Zahn, J. P. Rabe, N. Koch
Hexa-peri-hexabenzocoronene on Ag(111): monolayer/multilayer transition of molecular orientation and electronic structure
J. Phys. Chem. C 112 (2008) 1570


P. Cosseddu, A. Bonfiglio, I. Salzmann, J. P. Rabe, N. Koch
Ambipolar transport in transparent and flexible all-organic heterojunction field effect transistors at ambient conditions
Org. Electron. 9 (2008) 191


N. Koch
Energy levels at interfaces between metals and conjugated organic molecules
J. Phys.-Condes. Matter 20 (2008) 18


N. Koch
COLL 367-Ground-state charge transfer across organic/organic junctions
ACS prceedings 235 (2008)


S. Duhm, A. Gerlach, I. Salzmann, B. Bröker, R. L. Johnson, F. Schreiber, N. Koch
PTCDA on Au(1 1 1), Ag(1 1 1) and Cu(1 1 1): Correlation of interface charge transfer to bonding distance
Org. Electron. 9 (2008) 111

N. Koch
Organic Electronic Devices and Their Functional Interfaces
Chem. Phys. Chem. 8 (2007) 1438
P. Cosseddu, I. Salzmann, J. P. Rabe, N. Koch, A. Bonfiglio
All-organic flexible and transparent ambipolar FETs with organic bulk heterojunctions
Mater. Res. Soc. Symp. Proc. 1029E (2007) F09-20


L. Romaner, G. Heimel, J.-L. Brédas, A. Gerlach, F. Schreiber, R. L. Johnson, J. Zegenhagen, S. Duhm, N. Koch, E. Zojer
Impact of bidirectional charge transfer and molecular distortions on the electronic structure of a metal-organic interface
Phys. Rev. Lett. 99 (2007) 256801


J.-O. Vogel, I. Salzmann, R. Opitz, S. Duhm, B. Nickel, J. P. Rabe, N. Koch
Sub-nanometer control of the interlayer spacing in thin films of intercalated rodlike conjugated molecules
J. Phys. Chem. B 111 (2007) 14097


K. Fehse, S. Olthof, K. Walzer, K. Leo, R. L. Johnson, H. Glowatzki, B. Bröker, N. Koch
Energy level alignment of electrically doped hole transport layers with transparent and conductive indium tin oxide and polymer anodes
J. Appl. Phys. 102 (2007) 073719


H. Glowatzki, S. Duhm, K.-F. Braun, J. P. Rabe, N. Koch
Molecular chains and carpets of sexithiophenes on Au(111)
Phys. Rev. B 76 (2007) 125425


H. Krüger, S. Janietz, D. Sainova, D. Dobreva, N. Koch, A. Vollmer
Hybrid supramolecular naphthalenediimide-thiophene structures and their application in polymer electronics
Adv. Funct. Mater. 17 (2007) 3715


I. Salzmann, S. Duhm, R. Opitz, J. P. Rabe, N. Koch
Impact of low 6,13-pentacenequinone concentration on pentacene thin film growth
Appl. Phys. Lett. 91 (2007) 051919


R. Kniprath, S. Duhm, H. Glowatzki, N. Koch, S. Rogaschewski, J. P. Rabe, S. Kirstein
Internal structure of nanoporous TiO2 / polyion thin films prepared by layer-by-layer deposition
Langmuir 23 (2007) 9860


E. F. Aziz, A. Vollmer, S. Eisebitt, W. Eberhardt, P. Pingel, D. Neher, N. Koch
Localized charge transfer in a molecularly doped conducting polymer
Adv. Mater. 19 (2007) 3257


F. Schreiber, A. Gerlach, N. Koch, E. Zojer, M. Sokolowski, F. S. Tautz, M. Rohlfing, E. Umbach
Comment on "Electron core-hole interaction and its induced ionic structural relaxation in molecular systems under x-ray irradiation"
Phys. Rev. Lett. 99 (2007) 059601


B. Stadlober, U. Haas, H. Gold, A. Haase, G. Jakopic, G. Leising, N. Koch, S. Rentenberger, E. Zojer
Orders-of-magnitude reduction of the contact resistance in short-channel hot embossed organic thin film transistors by oxidative treatment of Au-Electrodes
Adv. Funct. Mater. 17 (2007) 2687


F. J. Zhang, A. Vollmer, J. Zhang, Z. Xu, J. P. Rabe, N. Koch
Energy level alignment and morphology of interfaces between molecular and polymeric organic semiconductors
Org. Electron. 8 (2007) 606


J. Zhang, I. Salzmann, S. Rogaschewski, J. P. Rabe, N. Koch, F. Zhang, Z. Xu
Arrays of crystalline C60 and pentacene nanocolumns
Appl. Phys. Lett. 90 (2007) 193117


I. Salzmann, R. Opitz, S. Rogaschewski, J. P. Rabe, N. Koch, B. Nickel
Phase separation in vacuum codeposited pentacene/6,13-pentacenequinone thin films
Phys. Rev B 75 (2007) 174108


S. Duhm, H. Glowatzki, J. P. Rabe, N. Koch, R. L. Johnson
Spontaneous charge transfer at organic-organic homointerfaces to establish thermodynamic equilibrium
Appl. Phys. Lett. 90 (2007) 122113


D. Sainova, S. Janietz, U. Asawapirom, L. Romaner, E. Zojer, N. Koch, A. Vollmer
Improving the stability of polymer FETs by introducing fixed acceptor units into the main chain: Application to poly(alkylthiophenes)
Chem. Mater. 19 (2007) 1472


Y. Wu, T. Toccoli, N. Koch, E. Iacob, A. Pallaoro, P. Rudolf, S. Iannotta
Controlling the early stages of pentacene growth by supersonic molecular beam deposition
Phys. Rev. Lett. 98 (2007) 076601


N. Koch, A. Vollmer, A. Elschner
Influence of water on the work function of conducting poly(3,4-ethylenedioxythiophene)/poly(styrenesulfonate)
Appl. Phys. Lett. 90 (2007) 043512


N. Koch, A. Vollmer, S. Duhm, Y. Sakamoto, T. Suzuki
The effect of fluorination on pentacene/gold interface energetics and charge reorganization energy
Adv. Mater. 19 (2007) 112


A. Gerlach, S. Sellner, F. Schreiber, N. Koch, J. Zegenhagen
Substrate dependent bonding distances of PTCDA: A comparative x-ray standing-wave study on Cu(111) and Ag(111)
Phys. Rev. B 75 (2007) 045401



S. Duhm, H. Glowatzki, V. Cimpeanu, J. Klankermayer, J. P. Rabe, R. L. Johnson, N. Koch
Weak charge transfer between an acceptor molecule and metal surfaces enabling organic/metal energy level tuning
J. Phys. Chem. B 110 (2006) 21069


N. Koch, A. Vollmer
Electrode–molecular semiconductor contacts: Work-function-dependent hole injection barriers versus Fermi-level pinning
Appl. Phys. Lett. 89 (2006) 162107


S. Rentenberger, A. Vollmer, E. Zojer, R. Schennach, N. Koch
UV/ozone treated Au for air-stable, low hole injection barrier electrodes in organic electronics
J. Appl. Phys. 100 (2006) 053701


N. Koch, I. Salzmann, R. L. Johnson, J. Pflaum, R. Friedlein, J. P. Rabe
Molecular orientation dependent energy levels at interfaces with pentacene and pentacenequinone
Org. Electron. 7 (2006) 537


J. Guo, N. Koch, S. L. Bernasek, J. Schwartz
Enhanced hole injection in a polymer light emitting diode using a small molecule monolayer bound to the anode
Chem. Phys. Lett. 426 (2006) 370


S. Blumstengel, N. Koch, S. Duhm, H. Glowatzki, R. L. Johnson, C. Xu, A. Yassar, J. P. Rabe, F. Henneberger
Morphology, interfacial electronic structure, and optical properties of oligothiophenes grown on ZnSe(100) by molecular beam deposition
Phys. Rev. B 73 (2006) 165323


N. Koch, A. Vollmer, I. Salzmann, B. Nickel, H. Weiss, J. P. Rabe
Evidence for temperature-dependent band dispersion in pentacene
Phys. Rev. Lett. 96 (2006) 156803


N. Koch, A. Elschner, R. L. Johnson
Green polyfluorene-conducting polymers interfaces: Energy level alignment and device performance
J. Appl. Phys. 100 (2006) 024512


S. Duhm, H. Glowatzki, J. P. Rabe, N. Koch, R. L. Johnson
Influence of alkyl chain substitution on sexithienyl-metal interface morphology and energetics
Appl. Phys. Lett. 88 (2006) 203109


A. Vollmer, H. Weiss, S. Rentenberger, I. Salzmann, J. P. Rabe, N. Koch
The interaction of oxygen and ozone with pentacene
Surf. Sci. 600 (2006) 4004



N. Koch, S. Duhm, J. P. Rabe, S. Rentenberger, R. L. Johnson, J. Klankermayer, F. Schreiber
Tuning the hole injection barrier height at organic/metal interfaces with (sub-) monolayers of electron acceptor molecules
Appl. Phys. Lett. 87 (2005) 101905


N. Koch, S. Duhm, A. Vollmer, J. P. Rabe, R. L. Johnson
Optimized hole injection with strong electron acceptors at organic-metal interfaces
Phys. Rev. Lett. 95 (2005) 237601


C. E. Heiner, J. Dreyer, I. V. Hertel, N. Koch, H.-H. Ritze, W. Widdra, B. Winter
Anisotropy in ordered sexithiophene thin films studied by angle-resolved photoemission using combined laser and synchrotron radiation
Appl. Phys. Lett. 87 (2005) 093501


N. Koch, G. Heimel, J. Wu, E. Zojer, R. L. Johnson, J.-L. Brédas, K. Müllen, J. P. Rabe
Influence of molecular conformation on organic/metal interface energetics
Chem. Phys. Lett. 413 (2005) 390


A. Vollmer, O. D. Jurchescu, I. Arfaoui, I. Salzmann, T. T. M. Palstra, P. Rudolf, J. Niemax, J. Pflaum, J. P. Rabe, N. Koch
The effect of oxygen exposure on pentacene electronic structure
Eur. Phys. J. E 17 (2005) 339


Y. Hosoi, N. Koch, Y. Sakurai, H. Ishii, T. U. Kampen, G. Salvan, D. R. T. Zahn, G. Leising, Y. Ouchi, K. Seki
Structural study of thin films of neutral and potassium-doped oligophenylenes on Cu(1 0 0)
Surf. Sci. 589 (2005) 19


E.L. Hanson, J. Guo, N. Koch, J. Schwartz, S. L. Bernasek
Advanced surface modification of indium tin oxide for improved charge injection in organic devices
J. Am. Chem. Soc. 127 (2005) 10058


J. Guo, N. Koch, J. Schwartz, S. L. Bernasek
Direct measurement of surface complex loading and surface dipole and their effect on simple device behavior
J. Phys. Chem. B 109 (2005) 3966


N. Koch, F. Jäckel, J. Ghijsen, M. C. Rojas, M. Grioni, J. P. Rabe, R. L. Johnson, A. Kahn, J.-J. Pireaux
Observation of filled states at the Fermi-level in alkali-metal intercalated organic films: dependence on substrate work function
J. Electron Spectrosc. Relat. Phenom. 144-147 (2005) 495


N. Koch, A. Elschner, R. L. Johnson, J. P. Rabe
Energy level alignment at interfaces with pentacene: metals versus conducting polymers
Appl. Surf. Sci. 244 (2005) 593


N. Koch, A. Elschner, J. P. Rabe, R. L. Johnson
Work function independent hole-injection barriers between pentacene and conducting polymers
Adv. Mater. 17 (2005) 330



B. Nickel, R. Barabash, R. Ruiz, N. Koch, A. Kahn, L. C. Feldman, R. F. Haglund, G. Scoles
Dislocation arrangements in pentacene thin films
Phys. Rev. B 70 (2004) 125401


J. Ghijsen, R. L. Johnson, A. Elschner, N. Koch
VUV photoemission using synchrotron light: A tool for characterising surfaces and interfaces occurring in OLEDs
J. Alloy. Compd. 382 (2004) 179



R. Ruiz, B. Nickel, N. Koch, L. C. Feldman, R. F. Haglund, A. Kahn, F. Family, G. Scoles
Dynamic scaling, island size distribution, and morphology in the aggregation regime of submonolayer pentacene films
Phys. Rev. Lett. 91 (2003) 136102


E. L. Hanson, J. Schwartz, B. Nickel, N. Koch, M. F. Danisman
Bonding self-assembled, compact organophosphonate monolayers to the native oxide surface of silicon
J. Am. Chem. Soc. 125 (2003) 16074


N. Koch, B. Nickel, J. Ghijsen, A. Elschner, J. Schwartz, J.-J. Pireaux, A. Kahn
Metal versus polymer electrodes in organic devices: Energy level alignment, hole injection, and structure
Mater. Res. Soc. Symp. Proc. 711 (2003) L 3.6


A. C. Dürr, N. Koch, M. Kelsch, A. Rühm, J. Ghijsen, R. L. Johnson, J.-J. Pireaux, J. Schwartz, F. Schreiber, H. Dosch, A. Kahn
Interplay between morphology, structure and electronic properties at diindenoperylene-gold interfaces
Phys. Rev. B 68 (2003) 115428


N. Koch, A. Elschner, J. Schwartz, A. Kahn
Organic molecular films on gold versus conducting polymer: Influence of injection barrier height and morphology on current-voltage characteristics
Appl. Phys. Lett. 82 (2003) 2281


R. Weber, B. Winter, I. V. Hertel, B. Stiller, S. Schrader, L. Brehmer, N. Koch
Photoemission from azobenzene alkanethiol self-assembled monolayers
J. Phys. Chem. B 107 (2003) 7768


N. Koch, A. C. Dürr, J. Ghijsen, R. L. Johnson, J.-J. Pireaux, J. Schwartz, F. Schreiber, H. Dosch, A. Kahn
Optically induced electron transfer from conjugated organic molecules to charged metal clusters
Thin Solid Films 441 (2003) 145


R. Ruiz, B. A. Nickel, N. Koch, L. C. Feldman, R. F. Haglund, A. Kahn, G. Scoles
Pentacene ultrathin film formation on reduced and oxidized Si surfaces
Phys. Rev. B 67 (2003) 125406


N. Koch, C. Chan, A. Kahn, J. Schwartz
Lack of thermodynamic equilibrium in conjugated organic molecular thin films
Phys. Rev. B 67 (2003) 195330


A. Kahn, N. Koch, W. Y. Gao
Electronic structure and electrical properties of interfaces between metals and pi-conjugated molecular films
J. Polym. Sci. Pt. B-Polym. Phys.41 (2003) 2529


J. Schwartz, E. L. Bruner, N. Koch, A. R. Span, S. L. Bernasek, A. Kahn
Controlling the work function of indium tin oxide: Differentiating dipolar from local surface effects
Synth. Met. 138 (2003) 223


N. Koch, A. Kahn, J. Ghijsen, J.-J. Pireaux, J. Schwartz, R. L. Johnson, A. Elschner
Conjugated organic molecules on metal versus polymer electrodes: Demonstration of a key energy level alignment mechanism
Appl. Phys. Lett. 82 (2003) 70



N. Koch, J. Ghijsen, R. L. Johnson, J. Schwartz, J.-J. Pireaux, A. Kahn
Physisorption-like interaction at the interfaces formed by pentacene and samarium
J. Phys. Chem. B 106 (2002) 4192


C. Suess, F. P. Wenzl, G. Jakopic, M. Wuchse, S. Muehlegger, N. Koch, A. Haase, K. Lamprecht, M. Schatzmayr, C. Mitterbauer, F. Hofer, G. Leising
Combined XPS, AFM, TEM and ellipsometric studies on nanoscale layers in organic light emitting diodes
Surf. Sci. 507-510 (2002) 473


R. Ruiz, L. C. Feldman, R. F. Haglund Jr., R. A. McKee, N. Koch, B. A. Nickel, J. Pflaum, G. Scoles, A. Kahn
Growth and morphology of pentacene films on oxide surfaces
Mater. Res. Soc. Symp. Proc. 708 (2002) 415


E. L. Bruner, N. Koch, A. R. Span, S. L. Bernasek, A. Kahn, J. Schwartz
Controlling the workfunction of indium tin oxide: Differentiating dipolar from local surface effects
J. Am. Chem. Soc. 124 (2002) 3192


N. Koch, J. Ghijsen, R. Ruiz, J. Pflaum, R. L. Johnson, J.-J. Pireaux, J. Schwartz, A. Kahn
Interaction and energy level alignment at interfaces between pentacene and low work function metals
Mater. Res. Soc. Symp. Proc. 708 (2002) 9


E. Bruner, J. Schwartz, S. L. Bernasek, N. Koch, A. Span, A. Kahn
Modifying the work function of indium tin oxide
J. Am. Chem. Soc. 224 (2002) 3192



E. S. Gawalt, M. J. Avaltroni, N. Koch, J. Schwartz
Self-assembly and bonding of alkanephosphonic acids on the native oxide surface of titanium
Langmuir 17 (2001) 5736


R. Resel, N. Koch, F. Meghdadi, G. Leising, L. Athouel, G. Froyer, F.Hofer
A polymorph crystal structure of hexaphenyl observed in thin films
Cryst. Res. Technol. 36 (2001) 47


N. Koch, D. Pop, R. L. Weber, N. Böwering, B. Winter, M. Wick, G. Leising, I. V. Hertel, W. Braun
Radiation induced degradation and surface charging of organic thin films in ultraviolet photoemission spectroscopy
Thin Solid Films 391 (2001) 81


N. Koch, H. Oji, E. Ito, E. Zojer, H. Ishii, G. Leising, K. Seki
Combined photoelectron and metastable atom electron spectroscopy study of n-doped oligophenylene thin films
Appl. Surf. Sci. 175-176 (2001) 764


N. Koch, E. Zojer, A. Rajagopal, J. Ghjisen, R. L. Johnson, G. Leising, J.-J. Pireaux
Electronic properties of the interfaces between the wide bandgap organic semiconductor para-sexiphenyl and samarium
Adv. Funct. Mater. 11 (2001) 51


N. Koch, R. Pairleitner, Q. Toan Le, E.W. Forsythe, Y. Gao, G. Leising
Photoemission spectroscopic investigation on the interface formation of a ladder-type poly(para-phenylene) with aluminum
Appl. Phys. Lett. 76 (2000) 3738


H. Schürmann, N. Koch, A. Vollmer, S. Schrader, M. Neumann
Angle resolved ultraviolet photoelectron spectroscopy of oriented sexiphenyl layers
Synth. Met. 111-112 (2000) 591


N. Koch, A. Rajagopal, E. Zojer, J. Ghijsen, X. Crispin, G. Pourtois, J.-L. Bredas, J.-J. Pireaux, G. Leising
The influence of the counterion on the electronic structure in doped phenylene-based materials
Surf. Sci. 454-456 (2000) 1000


E. Zojer, N. Koch, P. Puschnig, F. Meghdadi, A. Niko, R. Resel, C. Ambrosch-Draxl, M. Knupfer, J. Fink, J. L. Brédas, G. Leising
Structure, morphology and optical properties of highly ordered films of para-sexiphenyl
Phys. Rev. B 61 (2000) 16538


E. Ito, N. Koch, H. Oji, H. Ishii, G.Leising, K. Seki
Photoemission study of metal-deposited p-sexiphenyl films
Mater. Res. Soc. Symp. Proc. 598 (2000) BB3.65


N. Koch, Y. Hosoi, H. Ishii, A. Vollmer, G. Leising, K. Seki
Epitaxial thin film structures of electroluminescent materials
Mater. Res. Soc. Symp. Proc. 598 (2000) BB11.13


N. Koch, E. Zojer, A. Rajagopal, J. Ghijsen, R. L. Johnson, G. Leising, J.-J. Pireaux
A new alternative for the low-workfunction electrode in organic devices
Mater. Res. Soc. Symp. Proc. 598 (2000) BB11.12


N. Koch, A. Rajagopal, J. Ghijsen, R. L. Johnson, G. Leising, J.-J. Pireaux
Bipolaron: the stable charged species in n-doped p-sexiphenyl
J. Phys. Chem. B 104 (2000) 1434


A. Rajagopal, N. Koch, J. Ghijsen, R. L. Johnson, K. Kaeriyama , G. Leising, J.-J. Pireaux
Interfacial electronic structure for Ca and an electroluminescent polymer: poly (2,5-diheptyl-1,4-phenylene-alt-2,5-thienylene)
J. Appl. Phys. 87 (2000) 1331


N. Koch, G. Leising, L.-M. Yu, A. Rajagopal, J.-J. Pireaux, R.L. Johnson
Bipolaron formation in para-sexiphenyl thin films upon Cs doping
J. Vac. Sci. Technol. A 18 (2000) 295



S. Schrader, P. Imperia, N. Koch, G. Leising, B. Falk
Organic light-emitting devices based on new heterocyclic compounds
Proc. SPIE 3797 (2000) 209


U. Theissl, E. J. W. List, N. Koch, A. Vollmer, S. Schrader, J.-J. Pireaux, G. Leising
The valence electronic structure of n-doped p-sexiphenyl
Mater. Res. Soc. Symp. Proc. 561 (1999) 167


H.-J. Brandt, R. Resel, J. Keckes, B. Koppelhuber-Bitschnau, N. Koch, G. Leising
Determination of crystallite size and lattice strain in hexaphenyl thin films by line profile analysis
Mater. Res. Soc. Symp. Proc. 561 (1999) 161


N. Koch, A. Pogantsch, E. J. W. List, R. I. R. Blyth, M. G. Ramsey, F. P. Netzer, G. Leising
Low-onset organic blue light emitting devices obtained by better interface control
Appl. Phys. Lett. 74 (1999) 2909


L. Athouël, R. Resel, N. Koch, F. Meghdadi, G. Froyer, G. Leising
Orientation of molecules in phenylene oligomer thin films: Influence of the substrate temperature
Synth. Met. 101 (1999) 627


C. Hohle, M. Jandke, S. Schloter, N. Koch, R. Resel, D. Haarer, P. Strohriegl
Novel low-molar-mass glasses for photorefractive and electroluminescent applications
Synth. Met. 102 (1999) 1535


S. Schrader, H. Schürmann, N. Koch, A. H. Otto, D. Prescher
Electronic structure of new donor acceptor substituted chromophores
Synth. Met. 101 (1999) 514


N. Koch, L.-M. Yu, V. Parente, R. Lazzaroni, R. L. Johnson, G. Leising, J.-J. Pireaux, J.-L. Bredas
The interaction of aluminum and p-sexiphenyl
Synth. Met. 101 (1999) 438


H. Schürmann, N. Koch, P. Imperia, S. Schrader, M. Jandke, P. Strohriegl, B. Schulz, G. Leising, L. Brehmer
Ultraviolet photoelectron spectroscopic study of heterocyclic model compounds for electroluminescent devices
Synth. Met. 102 (1999) 1069



R. Resel, W. Graupner, C. Hochfilzer, N. Koch, F. Meghdadi, S. Tasch, R. Wohlgenannt, G. Leising, K. Reichmann
Optimising hexaphenyl thin film quality for opto-electronic applications by heat treatment
Appl. Crystallogr.  (1998) 413 (Proceedings)


S. Schrader, W. Rieß, H. Vestweber, N. Koch
New polymeric heterolayer systems for efficient light-emitting devices
Proc. SPIE  3476 (1999) 188


N. Koch, L.-M. Yu, V. Parenté, R. Lazzaroni, R.L. Johnson, G. Leising, J.-J. Pireaux, J.-L. Brédas
Evidence for physisorption of aluminum on the surface of electroluminescent sexiphenyl
Adv. Mater. 10 (1998) 1038


N. Koch, L.-M. Yu, J.-L. Guyaux, Y. Morciaux, G. Leising, J.-J. Pireaux, G. Demoustier
Investigations on the aluminum/para-hexaphenyl interface in light emitting devices
Mater. Res. Soc. Symp. Proc. 488 (1998) 509



K. Reichmann, N. Koch, F. Meghdadi, G. Leising
Imaging and profiling of p-hexaphenyl layers on galliumarsenide
J. Computer Assisted Microscopy 9,1 (1997) 278


K. Reichmann, N. Koch, R. Resel, F. Meghdadi, G. Leising
Investigation of physical vapour deposition of p-hexaphenyl with Atomic Force Microscopy
Proc. MIDEM Conference 97 (1997) 249


R. Resel, N. Koch, F. Meghdadi, G. Leising, W. Unzog, K. Reichmann
Growth and preferred crystallographic orientation of hexaphenyl thin films
Thin Solid Films 305 (1997) 232


R. Resel, F. Meghdadi, N. Koch, G. Leising
Crystal structure of p-hexaphenyl thin films
Synth. Met. 84 (1997) 279


N. Koch, R. Resel, F. Meghdadi, G. Leising, K. Reichmann
Morphology of p-hexaphenyl thin films
Synth. Met. 84 (1997) 649


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