Roles of donor and acceptor nanodomains in 6% efficient thermally annealed polymer photovoltaics
- 16 April 2007
- journal article
- research article
- Published by AIP Publishing in Applied Physics Letters
- Vol. 90 (16), 163511
- https://doi.org/10.1063/1.2730756
Abstract
The authors have fabricated thin film polymer photovoltaics using 1-(3-methoxycarbonyl)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%.Keywords
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