Presenter: Prof. Frank Schreiber (Universitaet Tuebingen,Germany)
Topic: How X-rays can help to understand organic devices
Time: 10:00AM, Mar. 25th (Friday)
Location: Conference Room B, BLDG 909-1F
Abstract
In this lecture, we discuss different forms of theapplication of X-rays for the characterization of functional organic materialsand devices. These are typically not single crystals, but complex layeredmulti-component heterostructures with non-trivial interface geometries. Weillustrate how to address, using X-rays,
a) the different scenarios of organic-organic heterostructures ［1-4］
b) the interface between metal contacts and organic semiconductors［5，6］(withspecific role X-ray standing waves (XSW) can play for a high-precision study)and
c) the interface between organic semiconductors and cappinglayers.
We finally discuss the perspectives of using X-rays for othertypes of nano-structures, including in-situ monitoring of growth and structuralchanges［7］
Reference
[1] A. Hinderhofer and F. Schreiber, Organic-organicheterostructures: Concepts and applications, ChemPhysChem, 13 (2012) 628
[2] A. Aufderheide et al., Mixing-induced anisotropiccorrelations in molecular crystalline systems, Phys. Rev. Lett. 109 (2012)156102
[3] R. Banerjee et al., Evidence for kinetically limitedthickness dependent phase separation in organic thin film blends, Phys. Rev.Lett. 110 (2013) 185506
[4] C. Lorch et al., Controlling length-scales of the phaseseparation to optimize organic semiconductor blends, Appl. Phys. Lett. 107(2015) 201903
[5] H. Yamane et al., Site-Specific Geometric andElectronic Relaxations at Organic-Metal Interfaces, PRL 105 (2010) 046103
[6] G. Heimel et al., Charged and metallic molecularmonolayers through surface-induced aromatic stabilisation, Nature Chem. 5(2013) 187
[7] S. Bommel et al., Unravelling the multilayer growth ofthe fullerene C60 in real-time, Nature Comm. 5 (2014) 5388
Biography
Education and Career
Student: 1987 � 1992undergraduate studies in physics at Bochum University Diploma(with distinction)
PhD: 1995 Dr. rer.nat (with distinction) at Bochum University
Post-doc: 1996-1997Post-Doctoral Fellow at Princeton University
Juniorgroup leader: 1998-2002 Junior group leader in Stuttgart (University andMPI-MF); 2002
Habilitation in Stuttgart
Lecturer: 2002 - 2004 University Lecturer for PhysicalChemistry at the University of Oxford and fellow of Wadham College
Professor: sinceDecember 2004 Professor (Chair) at Tübingen University
Stipends and awards
- Diploma with distinction (''mit Auszeichnung'')
- PhD Fellowship of the “Graduiertenförderung NRW”
- PhD with distinction (''mit Auszeichnung'')
- PhD award (best thesis) of Bochum University
- Post-Doctoral Fellowship of the DFG for research atPrinceton University
- Distinguished Post-Doc at Princeton University(1996-1997)
-Prize for the best lecture (Wahlpflichtfach) in the winter term 2001/2002 inPhysics in Stuttgart
- Visiting Professor Status Beijing Institute of Technology(2007)
- Professor of the year in Physics in Tübingen (2008/2009)
- Visiting Scientist at Rutherford Labs / ISIS (2009)
- Visiting Scientist at ILL / Grenoble (2015)
Research Interests
physics of molecular and biological matter, scattering(X-rays, neutrons, light), optical spectroscopy, growth and structureformation, self-assembly, adsorption at interfaces, diffusion dynamics,proteins, nanoparticles, organic semiconductors, molecular interactions
Publications and Invited Talks
> 190 peer-reviewed publications; > 180 invitedtalks; > 6700 citations; H-Index = 40
Service to the Scientific Community
inter alia, referee for various international journals,editorial board of Nature Reports, member of reviewing committees at varioussynchrotron and neutron facilities, member of the Scientific Council /instrument review committee (ILL), instrument review committee (BESSY),partnership for soft condensed matter (PSCM)