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Dr. Selina Olthof

Phone: +49-221 470 - 4463
Fax: +49-221 470 - 5144
E-Mail: selina.olthofSpamProtectionuni-koeln.de
Room: 142


Research Interests

My re­se­arch in­te­rest is cen­te­red around novel organic semiconductors, based on organic molecules as well as hybrid perovskites. These ma­te­ri­als hold great po­ten­ti­al for the use in next ge­ne­ra­ti­on en­er­gy re­la­ted ap­p­li­ca­ti­ons such as light-emit­ting di­odes and pho­to­vol­taics, as well as elec­tro­nic ap­p­li­ca­ti­ons like tran­sis­tors and me­mo­ry de­vices.

In these mul­ti­laye­red struc­tu­res, char­ge trans­port bar­ri­ers bet­ween the different se­mi­con­duc­tors or to the in­or­ga­nic con­tact ma­te­ri­als play a cru­ci­al role for the de­vice per­for­mance. The­re­fo­re, my re­se­arch is focus on mea­su­ring, un­der­stan­ding, and in­flu­en­cing the en­er­ge­tic pro­per­ties and the alignment at in­ter­faces using photoelectron spectroscopy. I want to cor­re­la­te fin­dings re­gar­ding the en­er­ge­tic pro­per­ties with the elec­tro­nic per­for­mance and de­vice cha­rac­te­ris­tics. Fur­ther­mo­re, I in­ves­ti­ga­te the con­cept of controlled molecular do­ping in organic semiconductors, which makes it pos­si­ble to im­pro­ve the film and de­vice per­for­mance due to the pas­si­va­ti­on of un­wan­ted trap sta­tes, the in­crea­se in film con­duc­tivi­ty, and the pos­si­bi­li­ty to con­trol the Fermi level po­si­ti­on.

Curriculum Vitae

Since 11/2012 University of Cologne, Junior researcher (Habilitand) at the Institute for Physical Chemistry in the group of Prof. Klaus Meerholz. Head of the Surface Science Laboratory.
01/2018 – 06/2018

Technical University Dresden, Eleonore Trefftz Visiting Professor at the Center for Advancing Electronics Dresden (cfaed) and Dresden Integrated Center for Applied Physics and Photonic Materials (IAPP).

10/2010 - 09/2012

Princeton University, DAAD Fellowship Post-Doc position at the Department of Electrical Engineering with Prof. Antoine Kahn.

09/2006 – 06/2010

Technical University Dresden, PhD studies at the Institut für Angewandte Photophysik in the group of Prof. Karl Leo. PhD thesis: Photoelectron Spectroscopy on Doped Organic Semiconductors and Related Interface.

01/2005 – 03/2006

Max-Planck-Institute for Solid State Research, in the group of Prof. Klaus Kern. Diplomarbeit (Master Thesis) on the topic. Rastertunnelmikroskopie und –spektroskopie an Halbleiternanostrukturen (English: Scanning tunneling microscopy and spectroscopy of semiconductor nanostructures).

08/2003 – 05/2004

NUI Maynooth, Erasmus Fellowship for a two semester studying abroad in Maynoot, Ireland.

2000 – 2006 University of Stuttgart, Studying physics with focus on astrophysics, particle physics, and nanotechnology.

Grants and Awards

Gaede Preis Price is given by the German Physics Society (DPG) for outstanding research in the field of fundamental and vacuum based science
Eleonore Trefftz fellowship Visiting Professorship (6 months) at the Technical University Dresden (cfaed/iapp)
QM2 Independence Grant

Funding through the German excellence initiative,  supporting young researchers at the University of Cologne

Travel grant by the Alexander von Humboldt-Stiftung  for Humboldt Frontiers Meeting in India
DAAD travel grant for JMRS conference in Kyoto
Emanuel-Goldberg-Preis of the Technical University of Dresden awarded for the PhD thesis 2010
DAAD Fellowship for a two year Post-Doc stay in Princeton, USA
Erasmus Fellowship for one year studying abroad in Maynooth, Ireland


Selected Publications (ResearchID: L-8402-2015)

Complete List of Publications and Presentations can be found here.


  • Verfahren zur Herstellung von Fulleren-Derivaten. Patent no. DE102010046040 A1 (2012)
  • Organische Solarzelle, Patent no. DE102011013897 A1 (2012)