Regensburg 2016 – wissenschaftliches Programm

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HL: Fachverband Halbleiterphysik

HL 92: Postersession DS/HL

HL 92.19: Poster

Donnerstag, 10. März 2016, 16:00–19:00, Poster A

Influence of temperature on the interaction of excitons with electron-hole pairs in organic bulk heterojunction structures — •Jȩdrzej Szmytkowski — Faculty of Applied Physics and Mathematics, Gdańsk University of Technology, Gdańsk, Poland

Nowadays, a great attention is focused on organic photovoltaics. Bulk heterojunction structures based on donor-acceptor materials are treated as very promising systems to obtain high efficiencies of organic solar cells. The main effect which causes a loss of photocurrent is a recombination of charge carriers. Recently, it has been shown that an order of recombination depends on temperature. The aim of this work is to describe this process in the case when it occurs at a donor-acceptor interface due to excitons annihilation on electron-hole Langevin pairs. Additionally, a theoretical consideration based on the role of disorder is also presented.