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Type: Artigo de periódico
Title: Investigation of new PPV-type polymeric materials containing fluorene and thiophene units and their application in organic solar cells
Author: de Freitas, JN
Pivrikas, A
Nowacki, B
Akcelrud, LC
Sariciftci, NS
Nogueira, AF
Abstract: 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.
Subject: Conducting polymers
Organic solar cells
Country: Suíça
Editor: Elsevier Science Sa
Citation: Synthetic Metals. Elsevier Science Sa, v. 160, n. 15-16, n. 1654, n. 1661, 2010.
Rights: fechado
Identifier DOI: 10.1016/j.synthmet.2010.05.036
Date Issue: 2010
Appears in Collections:Unicamp - Artigos e Outros Documentos

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