Journal
SYNTHETIC METALS
Volume 160, Issue 15-16, Pages 1654-1661Publisher
ELSEVIER SCIENCE SA
DOI: 10.1016/j.synthmet.2010.05.036
Keywords
Conducting polymers; PPV; Polyfluorene; Polythiophene; Organic solar cells
Funding
- CNPq
- INEO
- Fapesp [05/56924-0]
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New poly(p-phenylenevinylene) (PPV)-type conducting polymers containing different concentrations of thiophene and fluorene functional units were investigated in this work and the photophysical and electrochemical properties were evaluated. We observed a dependence of these properties on the concentration of thiophene units in the polymer backbone. The hole mobilities were estimated to be on the order of 10(-6) cm(2) V-1 s(-1). The polymers were combined with different concentrations of a soluble fullerene derivative (PCBM) and applied in bulk-heterojunction photovoltaic cells. The effects of PCBM concentration and of annealing (post-production treatment) on these devices were investigated. The best results were obtained for the materials containing higher concentrations of thiophene units. (C) 2010 Elsevier B.V. All rights reserved.
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