Institut für Angewandte Physik


66. C. Zeiser, L. Moretti, F. Reicherter, H. F. Bettinger, M. Maiuri, G. Cerullo and K. Broch, Singlet fission in dideuterated tetracene and pentacene, ChemPhotoChem accepted

65. C. P. Theurer, A. M. Valencia, J. Hausch, C. Zeiser, V. Sivanesan, C. Cocchi, P. Tegeder and K. Broch, Photophysics of charge transfer complexes formed by tetracene and strong acceptors, J. Phys. Chem. C, 125, 11, 6313–6323 (2021)


64. S. Hammer, C. Zeiser, M. Deutsch, B. Engels, K. Broch and J. Plaum, Spatial anisotropy of charge transfer at perfluoropentacene-pentacene (001) single-crystal interfaces and its relevance for thin film devices, ACS Appl. Mater. Interfaces 12,47, 53547-53556 (2020).

63. C. Zeiser, L. Moretti, D. Lepple, G. Cerullo, M. Maiuri, and K. Broch, Singlet heterofission in tetracene-pentacene thin-film blends, Angew. Chem. Int. Ed. 59, 19966 (2020).

62. I. Nasrallah, M.K. Ravva, K. Broch, J. Novak, J. Armitage, G. Schweicher, A. Sadhanala, J. E. Anthony, J. L. Bredas, and H. Sirringhaus, A novel mitigation mechanism for photo-induced trapping in an anthradithiophene derivative using additives, Adv. Electron. Mater. 2000250 (2020).

61. Y. Kim, K. Broch, W. Lee, H. Ahn, J. Lee, D. Yoo, J. Kim, S. Chung, H. Sirringhaus, K. Kang, and T. Lee, Highly Stable Contact Doping in Organic Field Effect Transistors by Dopant-Blockade Method,  Adv. Funct. Mater. 2000058 (2020).

60. J. Niederhausen, A. Franco-Cañellas, S. Erker, Th. Schultz, K. Broch, A. Hinderhofer, S. Duhm, P. K. Thakur, D. A. Duncan, A. Gerlach, T.-L. Lee, O. T. Hofmann, F. Schreiber, and N. Koch, X-ray standing waves reveal lack of OH termination at hydroxylated ZnO(0001) surfaces, Phys. Rev. Materials 4, 020602(R) (2020).

59. T. Geiger, S. Schundelmeier, T. Hummel, J. Vahland, C. Zeiser, L. Moretti, M. Mauiri, C. Maichle-Mössmer, G. Cerullo, K. Broch, M. Ströbele, B. Speiser, and H. F. Bettinger, Modulating the electronic structure of organic semiconductors by site-specific substitution: the case of tetrafluoropentacenes, Chemistry: A European Journal, 26, 3420 (2020).

58. A. Wittmann, G. Schweicher, K. Broch, J. Novak, V. Lami, D. Cornil, E. R. McNellis, O. Zadvorna, D. Venkateshvaran, K. Takimiya, Y. H. Geerts, J. Cornil, Y. Vaynzof, J. Sinova, S. Watanabe, and H. Sirringhaus, Tuning Spin Current Injection at Ferromagnet-Nonmagnet Interfaces by Molecular Design, Phys. Rev. Lett. 124, 027204 (2020).


57. V. O. Kim, K. Broch, V. Belova, Y. S. Chen, A. Gerlach, F. Schreiber, H. Tamura, R. G. Della Valle, G. D’Avino, I. Salzmann, D. Beljonne, A. Rao, and R. Friend, Singlet exciton fission via an intermolecular charge transfer state in coevaporated pentacene-perfluoropentacene thin films, J. Chem. Phys. 151, 164706 (2019).

56. S. Wirsing, M. Hänsel, V. Belova, F. Schreiber, K. Broch, B. Engels, and P. Tegeder, Excited-State Dynamics in Perylene-Based Organic Semiconductor Thin Films: Theory Meets Experiment, J. Phys. Chem. C 123, 45, 27561 (2019).

55. G. Schweicher, G. D’Avino, M. T. Ruggiero, D. J. Harkin, K. Broch, D. Venkateshvaran, G. Liu, A. Richard, C. Ruzie, J. Armstrong, A. R. Kennedy, K. Shankland, K. Takimiya, Y. H. Geerts, J. A. Zeitler, S. Fratini, and H. Sirringhaus, Chasing the “Killer” Phonon Mode for the Rational Design of Low‐Disorder, High‐Mobility Molecular Semiconductors, Adv. Mater., 31, 43, 1902407 (2019).

54. M. Nikolka, K. Broch, J. Armitage, D. Hanifi, P. J. Nowack, D. Venkateshvaran, A. Sadhanala, J. Saska, M. Mascal, S.-H. Jung, J.-K. Lee, I. McCulloch, A. Salleo, and H. Sirringhaus, High-mobility, trap-free charge transport in conjugated polymer diodes, Nat. Commun. 10, 2122 (2019).

53. J. Dieterle, K. Broch, A. Hinderhofer, H. Frank, A. Gerlach, and F. Schreiber, Revealing suppressed intermolecular coupling effects in aggregated organic semiconductors by diluting the crystal: Model system Perfluoropentacene:Picene, J. Phys. Chem. A. 123, 32 (2019).

52. K. Kang, S. Schott, D. Venkateshvaran, K. Broch, G. Schweicher, D. Harkin, C. Jellett, C. B. Nielsen, I. McCulloch, and H. Sirringhaus, Investigation of the thermoelectric response in conducting polymers doped by solid-state diffusion, Mater. Today Phys. 8, 112-122 (2019).

51. S. B. King, K. Broch, A. Demling, and J. Stähler, Multistep and multiscale electron transfer and localization dynamics at a model electrolyte/metal interface  J. Chem. Phys. 150, 041702 (2019).

50. J. Rozboril, K. Broch, R. Resel, O. Caha, F. Münz, P. Mikulík, J. E. Anthony, H. Sirringhaus, and J. Novak, Annealing Behavior with Thickness Hindered Nucleation in Small-Molecule Organic Semiconductor Thin Films, Cryst. Growth Des. 19, 3777 (2019).


49. Q. Wang, A. Franco-Cañellas, P. Ji, C. Bürker, R.-B. Wang, K. Broch, P. K. Thakur, T.-L. Lee, H. Zhang, A. Gerlach, L. Chi, S. Duhm, and F. Schreiber, Bilayer formation vs. molecular exchange in organic heterostructures: strong impact of subtle changes in molecular structure, J. Phys. Chem. C 122, (2018) 9480.

48. Y. Nakayama, R. Tsuruta, A. Hinderhofer, Y. Mizuno, K. Broch, A. Gerlach, T. Koganezawa, T. Hosokai, and F. Schreiber, Temperature dependent epitaxial growth of C60 overlayers on single crystal pentacene, Adv. Mat. Interfaces 5, (2018) 1800084.

47. K. Broch, J. Dieterle, F. Branchi, N. J. Hestand, Y. Olivier, H. Tamura, C. Cruz, V.M. Nichols, A. Hinderhofer, D. Beljonne, F. C. Spano, G. Cerullo, C.J. Bardeen, and F. Schreiber, Robust singlet fission in pentacene thin films with tuned charge transfer interactions, Nature Communications 9, (2018) 954.

46. A. Franco-Cañellas, Q. Wang, K. Broch, B. Shen, A. Gerlach, H. F. Bettinger, S. Duhm, and F. Schreiber, Resolving intramolecular-distortion changes induced by the partial fluorination of pentacene adsorbed on Cu(111), Phys. Rev. Materials 2, (2018) 044002.

45. Hung-Yang Chen, Guillaume Schweicher, Miquel Planells, Sean M. Ryno, Katharina Broch, Andrew J. P. White, Dimitrios Simatos, Mark Little, Cameron Jellett, Samuel J. Cryer, Adam Marks, Michael Hurhangee, Jean-Luc Brédas, Henning Sirringhaus, and Iain McCulloch, Crystal Engineering of Dibenzothiophenothieno[3,2-b]thiophene (DBTTT) Isomers for Organic Field-Effect Transistors, Chem. Mater. 30, (2018) 7587.


44. R. Fujimoto, Y. Yamashita, S. Kumagai, J. Tsurumi, A. Hinderhofer, K. Broch, F. Schreiber, S. Watanabe, and J. Takeya, Molecular doping in organic semiconductors: fully solution-processed, vacuum-free doping with metal-organic complexes in an orthogonal solvent, J. Mater. Chem. C 5, (2017) 12023.

43. S. R. Chaudhari, J. M. Griffin, M. Lelli, K. Broch, V. Lemaur, Y. Olivier, H. Sirringhaus, C. P. Grey, A. Lessage, and L. Emsley, New developments in surface-enhanced solid-state NMR spectroscopy and their applications, Acta Cryst. A73, (2017) C321.

42.A. Franco-Cañellas, Q. Wang, K. Broch, D. A. Duncan, P. K. Thakur, L. Liu, S. Kera, A. Gerlach, S. Duhm, and F. Schreiber, Metal-organic interface functionalization via acceptor end groups: PTCDI on coinage metals, Phys. Rev. Materials 1, (2017) 013001.

41. M. Nikolka, I. Nasrallah, B. Rose, M. K. Ravva, K. Broch, A. Sadhanala, D. J. Harkin, J. Charmet, M. Hurhangee, A. Brown, S. Illig, P. Too, J. Jongman, I. McCulloch, J.-L. Bredas, and H. Sirringhaus, High operational and environmental stability of high-mobility conjugated polymer field-effect transistors through the use of molecular additives, Nature Materials 16, (2017) 356.

40.K. Broch, M. Gerhard, M. Halbich, S. Lippert, V. Belova, M. Koch, and F. Schreiber.
Time-resolved photoluminescence spectroscopy of charge transfer states in blends of pentacene and perfluoropentacene, Phys. stat. sol. 8, (2017) 1700064.

39. K. Broch, D. Venkateshvaran, V. Lemaur, Y. Olivier, D. Beljonne, M. Zelazny, I. Nasrallah, D. J. Harkin, M. Statz, R. Di Pietro , A. J. Kronemeijer, and H. Sirringhaus, Measurements of Ambipolar Seebeck Coefficients in High-Mobility Diketopyrrolopyrrole Donor–Acceptor Copolymers, Adv. Electron. Mater. Vol. 3 (2017).

38.M. Hänsel, V. Belova , A. Hinderhofer, F. Schreiber, K. Broch, and P. Tegeder, Ultrafast excited state dynamics in diindenoperylene films, J. Phys. Chem. C 121, (2017) 17900.

37. H. L. Stern, A. Cheminal, S.R. Yost, K. Broch, S. Bayliss, K. Chen, M. Tabachnyk, K. Thorley, N. Greenham, J. M. Hodgkiss, J. Anthony, M. Head-Gordon, A. J. Musser, A. Rao, and R. H. Friend, Ultrafast Triplet Pair Formation and Subsequent Thermally Activated Dissociation Control Efficient Endothermic Singlet Exciton Fission, Nat Chem. 9, 2017, 1205.

36. S. R. Chaudhari,  J. M. Griffin,  K. Broch,  A. Lesage,  V. Lemaur,  D. Dudenko,  Y. Olivier, H. Sirringhaus, L. Emsley, and  C. P. Grey, Donor–acceptor stacking arrangements in bulk and thin-film high-mobility conjugated polymers characterized using molecular modelling and MAS and surface-enhanced solid-state NMR spectroscopy, Chem. Sci. 8, (2017) 3126.


35. S. Wang, J. Yang, K. Broch, J. Novák, X. Cao, J. Shaw, Y. Tao, Y. Hu and W. Huang, Direct C-H arylation for various Ar-cored diketopyrrolopyrrole containing small molecules in solution-processed field-effect transistors, RSC Advances 6, (2016) 57163.

34. K. Kang, S. Watanabe, K. Broch, A. Sepe, A. Brown, I. Nasrallah, M. Nikolka, M. Heeney, D. Matsumoto, K. Marumoto, H. Tanaka, S.-i. Kuroda, and Henning Sirringhaus, Two-Dimensional Coherent Charge Transport in Highly Ordered Conducting Polymers Doped by Solid State Diffusion, Nature Materials 15, (2016) 896.

33. D. J. Harkin, K. Broch, M. Schreck, H. Ceymann, A. Stoy, I. McCulloch, N. Stingelin, C. Lambert, H. Sirringhaus, Decoupling Charge Transport and Electroluminescence in a High Mobility Polymer Semiconductor, Advanced Materials 28, (2016) 6378.

32. 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, and Nobuo Ueno, Epitaxial Growth of an Organic p-n Heterojunction: C60 on Single-Crystal Pentacene, ACS Appl. Mater. Interfaces 8, (2016) 13499.

31. K. Banger, C. Warwick, J. Lang, K. Broch, J. E. Halpert, J. Socratous, A. Brown, T. Leedham and H. Sirringhaus, Identification of dipole disorder in low temperature solution processed oxides: its utility and suppression for transparent high performance solution-processed hybrid electronics, Chem. Sci. 7,(2016) 6337.

30. C. Lorch, K. Broch, V. Belova, G. Duva, A. Hinderhofre, A. Gerlach, M. Jankowski and F. Schreiber, Growth and annealing kinetics of alpha-sexithiophere and fullerene C60 mixed films, J. Appl. Cryst. 49, (2016) 1266.

29. A.-C. Knall, R. S. Ashraf, M. Nikolka, C. B. Nielsen, B. Purushothaman, A. Sadhanala, M. Hurhangee, K. Broch, D. J. Harkin, J. Novak, M. Neophytou, P. Hayoz, H. Sirringhaus and I. McCulloch, Naphthacenodithiophee Based Polymers – New Members of the Acenodithiophere Family Exhibiting High Mobility and Power Conversion Efficiency, Adv. Funct. Mater. 26, (2016) 6961.

28. M. Tabachnyk, A. H. Karani, K. Broch, L. M. Pazos-Outon, J. Xiao, T. C. Jellicoe, J. Novak, D. J. Harkin, A. J. Pearson, A. Rao, N. C. Greenham, M. L. Böhm and R. H. Friend, Efficient singlet exciton fission in pentacene prepared from a soluble precursor, APL Materials 4, (2016) 116112 .

27. X. Wang, K. Broch, F. Schreiber, A. J. Meixner and D. Zhang, Revealing nanoscale optical properties and morphology in perfluoropentacene films by confocal and tip-enhanced near-field optical microscopy and spectroscopy, Phys. Chem. Chem. Phys. 18, (2016) 15919.


26. L. Yang, M. Tabachnyk, S. L. Bayliss, M. L. Boehm, K. Broch, N. C. Greenham, R. H. Friend and B. Ehrler, Solution-processable singlet fission photovoltaic devices, Nano Lett. 15, (2015) 354.

25. V. Nichols, K. Broch, F. Schreiber and C. Bardeen, Excited-State Dynamics of Diindenoperylene in Liquid Solution and in Solid Films, J. Phys. Chem. C 119, (2015) 12856.

24. M. Price, J. Butkus, T. Jellicoe, A. Sadhanala, A. Briane, J. Halpert, K. Broch, J. Hodgkiss, R. Friend and F. Deschler, Hot Carrier Cooling and Photoinduced Refractive Index Changes in Organic-Inorganic Lead Halide Perovskites, Nature Comm. 6, 8420 (2015).

23. C. Bürker, A. Franco-Cañellas, K. Broch, T.-L. Lee, A. Gerlach, and F. Schreiber, Surface reactions studied with X-ray standing wave, (Invited Article) "Highlight" of the Diamond Annual Review 2014/15.

22. J. Dieterle, K. Broch, A. Hinderhofer, H. Frank, J. Novak, A. Gerlach, T. Breuer, R. Banerjee, G. Witte, and F. Schreiber, Structural properties of picene-perfluoropentacene and picene-pentacene blends: Superlattice formation versus limited intermixing, J. Phys. Chem. C. 119, (2015) 26339.


21. X. Wang, K. Broch, R. Scholz, F. Schreiber, A. J. Meixner, and D. Zhang, Topography-Correlated Confocal Raman Microscopy with Cylindrical Vector Beams for Probing Nanoscale Structural Order, J. Phys. Chem. Lett. 5, (2014) 1048.

20. C. Bürker, A. Franco-Cañellas, K. Broch, T.-L. Lee, A. Gerlach, and F. Schreiber, Self-metalation of 2H-tetraphenylporphyrin on Cu(111) studied with XSW: Influence of the central metal atom on the adsorption distance, J. Phys. Chem. C 118, (2014) 13659.

19. J.-P. Yang, Q.-J. Sun, K. Yonezawa, A. Hinderhofer, A. Gerlach, K. Broch, F. Bussolotti, X. Gao, Y. Li, J. Tang, F. Schreiber, N. Ueno, S.-D. Wang, and S. Kera, Interface optimization using diindenoperylene for C60 thin film transistors with high electron mobility and stability, Org. Electronics 15, (2014) 2749.

18. D. Venkateshvaran, M. Nikolka, A. Sadhanala, V. Lemaur, M. Zelazny, M. Kepa, M. Hurhangee, A. J. Kronemeijer, V. Pekunia, I. Nasrallah, I. Romanov, K. Broch, I. Mc. Culloch, D. Emin, Y. Olivier, J. Cornil, D. Beljonne and H. Sirringhaus, Approaching disorder-free transport in high-mobility conjugated polymers, Nature 515, (2014) 384.


17. A. Hinderhofer, A. Gerlach, K. Broch, T. Hosokai, K. Yonezawa, K. Kato, S. Kera, N. Ueno, and F. Schreiber, Geometric and electronic structure of templated C60 on diindenoperylene thin films, J. Phys. Chem. C 117, (2013) 1053.

16. F. Anger, R. Scholz, E. Adamski, K. Broch, A. Gerlach, Y. Sakamoto, T. Suzuki and F. Schreiber, Optical properties of fully and partially fluorinated rubrene in films and solution, Appl. Phys. Lett. 102, (2013) 13308.

15. F. Liscio, C. Albonetti, K. Broch, A. Shehu, S. D. Quiroga, L. Ferlauto, C. Frank, S. Kowarik, R. Nervo, A. Gerlach, S. Milita, F. Schreiber, and F. Biscarini, Molecular reorganization in organic field-effect transistors and its effect on two-dimensional charge transport pathways, ACS Nano 7, (2013) 1257.

14. A. Horrer, C. Schäfer, D. Gollmer, K. Broch, J. Rogalski, Y. Fulmes, D. Zhang, A.J. Meixner, F. Schreiber, D.P. Kern, M. Fleischer, Parallel fabrication of plasmonic nanocone sensing arrays, SMALL 9, (2013) 3987.

13. K. Broch, A. Aufderheide, L. Raimondo, A. Sassella, A. Gerlach and F. Schreiber, Optical Properties of Blends: Influence of Mixing- Induced Disorder in Pentacene: Diindenoperylene vs. Perfluoropentacene:Diindenoperylene, J. Phys. Chem. C 117, (2013) 13952.

12. C. Frank, J. Novák, A. Gerlach, G. Ligorio, K. Broch, A. Hinderhofer, A. Aufderheide, R. Banerjee, R. Nervo and F. Schreiber, Real-time X-ray scattering studies on temperature dependence of perfluoropentacene thin film growth, J. Appl. Phys. 114, (2013) 043515.

11. K. Vasseur, K. Broch, A. L. Ayzner, B. P. Rand, D. Cheyns, C. Frank, F. Schreiber, M. F. Toney, L. Froyen and P. Heremans, Controlling the Texture and Crystallinity of Evaporated Lead Phthalocyanine Thin Films for Near-Infrared Sensitive Solar Cells, ACS Appl. Mater. Interfaces 5, (2013) 8505.

10. K. Broch, C. Bürker, J. Dieterle, S. Krause, A. Gerlach, and F. Schreiber, Impact of molecular tilt angle on the absorption spectra of pentacene:perfluoropentacene blends, Phys. Stat. Sol. RRL 7, (2013) 1084.

9. K. Broch, A. Gerlach, C. Lorch, J. Dieterle, J. Novák, A. Hinderhofer, and F. Schreiber, Structure formation in perfluoropentacene: diindenoperylene blends and its impact on transient effects in the optical properties studied in real-time during growth, J. Chem. Phys. 139, (2013) 174709.


8. F. Anger, J. O. Ossó, U. Heinemeyer, K. Broch, R. Scholz, A. Gerlach, and F. Schreiber, Photoluminescence spectroscopy of pure pentacene, perfluoropentacene and mixed thin films, J. Chem. Phys. 136, (2012) 054701.

7. J. Reinhardt, A. Hinderhofer, K. Broch, U. Heinemeyer, S. Kowarik, A. Vorobiev, A. Gerlach, and F. Schreiber, Structural and optical properties of mixed diindenoperylene-perfluoropentacene thin films, J. Phys. Chem. C 116, (2012) 10917.

6. A. Hinderhofer, T. Hosokai, K. Yonezawa, A. Gerlach, K. Kato, K. Broch, C. Frank, J. Novák, S. Kera, N. Ueno, and F. Schreiber, Post-growth surface smoothing of thin films of diindenoperylene, Appl. Phys. Lett. 101, (2012) 033307.

5. A. Aufderheide, K. Broch, J. Novák, A. Hinderhofer, R. Nervo, A. Gerlach, R. Banerjee and F. Schreiber, Mixing-induced anisotropic correlations in molecular crystalline systems, Phys. Rev. Lett. 109, (2012) 156102.

2011 and earlier

4. K. Broch, U. Heinemeyer, A. Hinderhofer, F. Anger, R. Scholz, A. Gerlach, and F. Schreiber, Optical evidence for intermolecular coupling in mixed films of pentacene and perfluoropentacene, Phys. Rev. B 83, (2011) 245307.

3. U. Heinemeyer, K. Broch, A. Hinderhofer, M. Kytka, R. Scholz, A. Gerlach, and F. Schreiber, Real-time changes in the optical spectrum of organic semiconducting films and their thickness regimes during growth, Phys. Rev. Lett. 104, (2010) 257401.

2. R. Srnanek, J. Jakabovic, E. Dobrocka, G. Irmer, U. Heinemeyer, K. Broch, F. Schreiber, A. Vincze, V. Machovic, J. Kovac, and D. Donoval, Evidence of pentacene bulk and thin film phase transformation into an orthorhombic phase by iodine diffusion, Chem. Phys. Lett. 484, (2010) 299.

1. S. Kowarik, K. Broch, A. Hinderhofer, A. Schwartzberg, J. O. Ossó, D. Kilcoyne, F. Schreiber, and S. R. Leone, Crystal grain orientation in organic homo- and heteroepitaxy of pentacene and perfluoropentacene studied with X-ray spectromicroscopy, J. Phys. Chem. C 114, (2010) 13061.