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Title:
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Photovoltaic properties of a conjugated polymer blend of MDMO - PPV and PCNEPV
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Author(s):
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Veenstra, S.C.; Verhees, W.J.H.; Kroon, J.M.; Koetse, M.M.; Sweelssen, J.; Bastiaansen, J.J.A.M.; Schoo, H.F.M.; Yang, X.; Alexeev, A.; Loos, J.; Schubert, U.S.; Wienk, M.M.
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Published by:
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Publication date:
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ECN
Solar Energy
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1-11-2004
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ECN report number:
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Document type:
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ECN-RX--04-118
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Article (scientific)
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Number of pages:
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6
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Published in: Chemistry of Materials (American Chemical Society), , 2004, Vol.16, p.2503-2508.
Abstract:
Photovoltaic properties of solution-processed semiconducting polymer
blends have been
studied. It is demonstrated that photoinduced charge transfer occurs
in binary mixtures of
poly[2-methoxy-5-(3,7-dimethyloctyloxy)-1,4-phenylenevinylene] (MDMO
-PPV) and poly-
[oxa-1,4-phenylene-(1-cyano-1,2-vinylene)
-(2-methoxy-5-(3,7-dimethyloctyloxy)-1,4-phenylene)-
1,2-(2-cyanovinylene)-1,4-phenylene] (PCNEPV). Further, it is shown
that the photovoltaic
performance is improved by a thermal treatment which alters the morphology
of the
photoactive layer. The temperature necessary to achieve the enhanced
performance is related
to transition temperatures of the pure polymers. Device optimization
yields solar cells with
a power conversion efficiency of 0.75% under standard test conditions
(AM 1.5, 1000 W/m
2).
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