Regensburg 2004 – wissenschaftliches Programm
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SYOH: Organic and Hybrid Systems for Future Electronics
SYOH 5: Poster
SYOH 5.48: Poster
Donnerstag, 11. März 2004, 18:00–21:00, B
Silicon - organic pigment material hybrids for photovoltaic application — •Thomas Mayer1, Ulrich Weiler1, Wolfram Jaegermann1, Derck Schlettwein2, Dieter Wöhrle3, and Marinus Kunst4 — 1Technische Universität Darmstadt, FB Material-und Geowissenschaften, FG Oberfächenforschung — 2Universität Oldenburg, Physikalische Chemie 1 — 3Universität Bremen, Institut für Organische und Makromolekulare Chemie — 4Hahn-Meitner Institut Berlin, Abt. Solare Energetik
We are running a project that is focussed on the development of silicon-organic pigment hybrid materials for thin film solar cell application. High conversion efficiency is expected from a combination of the advantages of organic dyes for light absorption and of silicon for charge carrier separation and transport. The project team, wants to find suitable dyes and deposition conditions for the preparation of photovoltaic hybrid materials. The composite will be prepared by (remote) hot wire chemical vapour deposition of silicon and co-sublimation of organic dye molecules. Pigments are synthesized and specifically modified to allow for injection of photo-excited charge carriers from dye orbitals to silicon bands. The basic idea of the concept of bulk hybrid materials for photovoltaic application will be introduced. As model experiments dye-Si and Si-dye layers have been grown and characterized by photoelectron spectroscopy, Raman spectroscopy and Time Resolved Microwave Conductivity. The results will exemplify the strategy to challenge the task of producing a new inorganic-organic functional composite material in view of photovoltaic applications.