Regensburg 2010 – wissenschaftliches Programm
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O: Fachverband Oberflächenphysik
O 41: Poster Session I (Semiconductor Substrates: Epitaxy and growth; Semiconductor Substrates: Adsorbtion; Semiconductor Substrates: Solid-liquid interfaces; Semiconductor Substrates: Clean surfaces; Oxides and insulators: Epitaxy and growth; Oxides and insulators: Adsorption; Oxides and insulators: Clean surfaces; Organic, polymeric and biomolecular films - also with adsorbates; Organic electronics and photovoltaics, Surface chemical reactions; Heterogeneous catalysis; Phase transitions; Particles and clusters; Surface dynamics; Surface or interface magnetism; Electron and spin dynamics; Spin-Orbit Interaction at Surfaces; Electronic structure; Nanotribology; Solid/liquid interfaces; Graphene; Others)
O 41.43: Poster
Dienstag, 23. März 2010, 18:30–21:00, Poster B1
Photoemission Study under Artificial Solar Irradiation: Interface Studies of the Systems Ag/C60/CuPc and Ag/CuPc/C60 — •Mathias Fingerle1, Felix Schmitt1, Ingmar Bruder2, Stefan Lach1, and Christiane Ziegler1 — 1Department of Physics, University of Kaiserslautern, 67663 Kaiserslautern, Germany — 2BASF, 67056 Ludwigshafen, Germany
During the last 3 decades research on organic solar cells has been performed and has gained increasing attention. This is due to the fact that devices can be produced at large scale and low cost. Most of today’s prototype devices are of hybrid nature, i.e. the electrodes are made from inorganic materials whereas the active layers are composed by two or more organic thin films.
Here, fullerene (C60) as n-type and copper phthalocyanine (CuPc) as p-type semiconductor were used as active organic materials. The electronic properties of the organic interfaces in layer structures composed of Si/SiO2/Ag/C60/CuPc and Si/SiO2/Ag/CuPc/C60 were investigated by means of UPS and IPES. For the first time, UPS measurements were carried out under additional artificial solar irradiation. In particular for the interface CuPc/C60, interesting changes in electron affinity and work function could be determined.