Prof. Dr. Gregor Witte

Philipps-Universität Marburg

Department of Physics

Renthof 7, 35032 Marburg
Phone: +49 6421 28-21384
Fax: +49 6421 28-21380


Organic semiconductor films, physical chemistry of adsorbates, template and interface controlled growth of thin films, X-ray absorption spectroscopy

University Education

2002 Habilitation (Dr. rer. nat. habil.) in Physical Chemistry, Ruhr-Universität Bochum „Physico-chemical properties of organic thin films on copper surfaces“
1995 Doctoral degree in Physics (Dr. rer. nat.), Georg-August Universität Göttingen, Dissertation on “Characterization of structure and dynamics of clean and adsorbate covered oxid and metal surfaces”, thesis advisor: Prof. J. P. Toennies
1989 Diploma degree in Physics (Dipl. Phys.), Georg-August Universität Göttingen, supervisor: Prof. J. P. Toennies
1983-89 Study of Physics at the Georg-August Universität Göttingen

Professional Experience

2008- Professor (W3) for Experimental Physics, Philipps-Universität Marburg
2003-08 Lecturer/docent, Department of Chemistry, Ruhr-Universität Bochum
1998-02 Group leader (assistant professor), Chair of physical chemistry I at the Ruhr-Universität Bochum
1996-97 Postdoc, IBM Almaden Research Center, San Jose (USA), Department Storage and Technology (Dr. D. Chambliss) and
Lawrence Berkeley National Laboratory (National Center for Electron Microscopy), Berkeley (USA) (imaging of magnetic thin films by spin-polarized LEEM)
1991-95 Research Assistant at the MPI for Strömungsforschung in Göttingen
1990-91 Civil service at the Diakonisches Werk in München and freelancer within the framework of the satellite project “ORFEUS“ (project assistant for optical alignment of a SpaceShuttle based UV-telescope at Kaiser-Threde GmbH, München)
1989-90 Research Assistant at the MPI for Strömungsforschung in Göttingen

Honours, Awards and other Proofs of Qualification

2012-15 Vice Dean (2012-13) and Dean (2013-15) of the Faculty of Physics at the Philipps-University Marburg
1996 Postdoctoral Fellowship of the DFG

Selected Publications

  1. P. Bagus, D. Käfer, G. Witte, Ch. Wöll, Work function Changes Induced by Charged Adsorbates: Origin of the Polarity Asymmetry, Phys. Rev. Lett. 100, 126101 (2008).
  2. D. Käfer, A. Bashir, X. Dou, G. Witte, K. Müllen, Ch. Wöll, Evidence for Band-like Transport in Graphene-based Organic Monolayers, Adv. Mater. 22, 384 (2010).
  3. W. Khalid, M. El Helou, T. Murböck, Z. Yue, J.-M. Montenegro, K. Schubert, G. Göbel, F. Lisdat, G. Witte, W. J. Parak, Immobilization of quantum dots via conjugated self-assembled monolayers and their application as a light-controlled sensor for the detection of hydrogen peroxide, ACS Nano 5, 9870 (2011).
  4. K. Kolata, T. Breuer, G. Witte, S. Chatterjee, Molecular Packing Determines Singlet Exciton Fission in Organic Solids, ACS Nano 8, 7377 (2014).
  5. T. Breuer, G. Witte, Controlling Nanostructures by Templated Templates: Inheriting Molecular Orientation in Binary Heterostructures, ACS Appl. Mater. Interfaces 7, 20485 (2015).
  6. T. Breuer, A. Karthäuser, G. Witte, Effects of Molecular Orientation in Acceptor-Donor Interfaces between Pentacene and C60 and Diels-Alder Adduct Formation at the Molecular Interface, Adv. Mater. Interfaces 3, 1500452 (2016).
  7. P. Rotter, B. A. J. Lechner, A. Morherr, D.M. Chisnall, D.J. Ward, A.P. Jardine, J. Ellis, W. Allison, B. Eckhardt, G. Witte, Coupling of diffusion and orientation of pentacene on an organic surface, Nat. Mater. 15, 397 (2016).
  8. A. Rinn, T. Breuer, J. Wiegand, M. Beck, J. Hübner, R. C. Döring, M. Oestreich, W. Heimbrodt, G. Witte, S. Chatterjee, Interfacial Molecular Packing Determines Exciton Dynamics in Molecular Heterostructures: the Case of Pentacene – Perfluoropentacene, ACS Appl. Mater. Interfaces 9, 42010 (2017).
  9. T. Rangel, A. Rinn, S. Sharifzadeh, F. H. da Jornada, S. G. Louie, A. Pick, G. Witte, L. Kronik, J. B. Neaton, S. Chatterjee, Low-lying excited-states in crystalline perylene in experiment and theory, PNAS 115, 284 (2018).
  10. F. Widdascheck, A. A. Hauke, G. Witte, A Solvent-Free Solution: Vacuum-Deposited Organic Monolayers Modify Work Functions of Noble Metal Electrodes, Adv. Funct. Mater. 29, 1808385 (2019).