Berlin 2015 – wissenschaftliches Programm
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HL: Fachverband Halbleiterphysik
HL 61: Posters III (Organic-inorganic perovskite semiconductors; Organic photovoltaics and electronics; Photovoltaics; Energy science; New materials and concepts)
HL 61.24: Poster
Mittwoch, 18. März 2015, 15:00–20:00, Poster F
Optical Spectroscopy on Organic-Inorganic Hybrid Structures - Charge Transfer in Type-II Level Systems — •Ingo Meyenburg1, Benjamin Heidelmeier1, Matthias Weber1, Nils Rosemann1, Christian Prinzisky2, Jane Falgenhauer3, Derck Schlettwein3, Jörg Sundermeyer2, and Wolfram Heimbrodt1 — 1Philipps Universität Marburg Department of Physics and Material Sciences Centre, Renthof 5, D-35032 Marburg — 2Philipps Universität Marburg department of chemistry, Hans-Meerwein-Straße, D-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. Exciton recombination of spatially indirect excitons across type-II organic-inorganic interface can give access to the level alignment and interface properties of the hybrids. In addition to this method the depletion of excited organic states as a consequence of charge transfer into the inorganic semiconductor, which can be revealed by time resolved photoluminescence, can precise the determination of the level alignment. Further optical measurements including Raman spectroscopy help to understand the properties of hybrids including the interface. Starting with the idea of material combinations known from dye sensitized solar cells which imply a charge transfer from organic to inorganic structure some promising hybrid systems are investigated. Besides Antrachinone derivates the indoline dye D149 on mesoporous ZnO is a recently studied hybrid structure.