Roles of donor and acceptor nanodomains in 6% efficient thermally annealed polymer photovoltaics

The authors have fabricated thin film polymer photovoltaics using 1-(3-methoxy carbonyl)propyl-1-phenyl-(6,6)C61 within regioregular poly(3-hexylthiophene) bulk heterojunction absorbing layers. Using thermal annealing at temperatures approaching the glass transition temperature, they have examined t...

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Bibliographic Details
Published in:Applied physics letters 2007-04, Vol.90 (16), p.163511-163511-3
Main Authors: Kim, Kyungkon, Liu, Jiwen, Namboothiry, Manoj A. G., Carroll, David L.
Format: Article
Language:English
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Summary:The authors have fabricated thin film polymer photovoltaics using 1-(3-methoxy carbonyl)propyl-1-phenyl-(6,6)C61 within regioregular poly(3-hexylthiophene) bulk heterojunction absorbing layers. Using thermal annealing at temperatures approaching the glass transition temperature, they have examined the formation of nanodomains within the matrix. These domains modify charge transport pathways in such a way as to allow for the efficient use of thicker absorbing layers. This results in a nearly 20% gain in overall performance for this polymer system with external power efficiencies exceeding 6%.
ISSN:0003-6951
1077-3118
DOI:10.1063/1.2730756