Photovoltaic Properties of a Conjugated Polymer Blend of MDMO−PPV and PCNEPV

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)...

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Bibliographic Details
Published in:Chemistry of materials 2004-06, Vol.16 (12), p.2503-2508
Main Authors: 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
Format: Article
Language:English
Subjects:
Applied sciences
Chemistry
Condensed matter: electronic structure, electrical, magnetic, and optical properties
Condensed matter: structure, mechanical and thermal properties
Exact sciences and technology
General and physical chemistry
Physicochemistry of polymers
Physics
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Summary: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/m2).
ISSN:0897-4756
1520-5002
DOI:10.1021/cm049917d