Regensburg 2016 – wissenschaftliches Programm

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HL: Fachverband Halbleiterphysik

HL 36: Poster Ib

HL 36.9: Poster

Dienstag, 8. März 2016, 15:00–19:00, Poster A

Optical Spectroscopy on Organic-Inorganic Hybrid Structures - Charge Transfer in Type-II Level Systems — •Ingo Meyenburg¹, Benjamin Heidelmeier¹, Nils Rosemann¹, Christian Prinzisky², Jane Falgenhauer³, Jörg Sundermeyer², Derck Schlettwein³, and Wolfram Heimbrodt¹ — ¹Philipps Universität Marburg Department of Physics and Material Sciences Centre, Renthof 5, 35032 Marburg — ²Philipps Universität Marburg Department of Chemistry, Hans-Meerwein-Straße, 35032 Marburg — ³Justus-Liebig-University, Institute of Applied Physics, Heinrich-Buff-Ring 16, 35392 Gießen, Germany

Understanding interface processes is crucial for improvements of existing and new functional materials based on organic-inorganic hybrid semiconductor structures.

The depletion of excited organic states by charge transfer into the inorganic semiconductor helps to determine the level alignment at the interface. Indoline was already successfully used in dye sensitized solar cells (DSSC) which imply a charge transfer from the organic molecules into the inorganic substrate. Indoline dyes on mesoporous ZnO and on other promising substrates have been studied. A variation of the indoline dyes gives acces to different level alignments. The charge transfer time acts as sensor for the interfaces. The influence of the anchoring carboxylate chain on the charge transfer at the interface is clearified. Furthermore, newly sensitized Anthraquinone derivates are discussed regarding their suitability in DSSC.