Dresden 2017 – wissenschaftliches Programm
CPP 13.1: Poster
Montag, 20. März 2017, 18:30–21:00, P1A
Hybrid photovoltaics based on diblock copolymer structured, mesoporous Ge thin films — •Andreas Hetzenecker1, Nuri Hohn1, Michael Giebel2, Thomas F. Fässler2, and Peter Müller-Buschbaum1 — 1TU München, Physik-Department, LS Funktionelle Materialien, James-Franck-Str. 1, 85748 Garching — 2TU München, Chemie-Department, LS Anorganische Chemie mit Schwerpunkt Neue Materialien, Lichtenbergstr. 4, 85748 Garching
Hybrid photovoltaics opens new possibilities in solar cell design, combining the mechanical stability and high charge carrier mobility of semiconductors with the potentially cost-efficient, large scale production and flexibility of organic materials. The usage of poly(styrene-b-ethylene oxide) as a template and K4Ge9 Zintl clusters as an inorganic precursor  for sol-gel synthesis is a novel approach to produce mesoporous germanium structures. This method offers control over pore size and degree of porosity via the block lengths of the template and the reactant concentrations. Sponge-like germanium thin films were synthesized and characterized regarding their absorption behavior with UV/Vis spectroscopy. Structural analysis was performed via SEM and profilometry.
M. M. Bentlohner et al., Angewandte Chemie International Edition, 55, 2441-2445 (2015).