Synthesis and photovoltaic performance of a fluorene-bithiophene copolymer
Contribuinte(s) |
UNIVERSIDADE DE SÃO PAULO |
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Data(s) |
27/05/2014
27/05/2014
01/04/2013
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Resumo |
We present the synthesis of a copolymer structure, poly(9,9′-n-di-hexyl-2,7-fluorene-alt-2,5- bithiophene), referred to herein as LaPPS43, and its physico-chemical characterization. Thin films of this polymer mixed with phenyl-C61-butyric acid methyl ester (PCBM) were used as the active layer in photovoltaic devices using the ITO/PEDOT:PSS/LaPPS43: PCBM/Ca/Al bulk heterojunction structure. The devices of different active layer thicknesses were electrically studied using J-V curves and the Photo-Celiv technique. The obtained results show that LaPPS43 combined with PCBM is a promising system for photovoltaic devices. Device performance is discussed in terms of the mean drift distance x for charge carriers. Photophysical data showed that the excitonic species are all localized in the aggregated forms. The mechanism of exciton formation and dissociation is also discussed. CNPq Instituto Nacional de Ciência e Tecnologia em Eletrônica Orgânica (INEO) PIPE UFPR |
Identificador |
Journal of Polymer Research, Dordrecht : Springer, v. 20, n. 4, p. 119-1-119-6, Apr. 2013 1022-9760 http://www.producao.usp.br/handle/BDPI/45072 10.1007/s10965-013-0119-3 |
Idioma(s) |
eng |
Publicador |
Springer Dordrecht |
Relação |
Journal of Polymer Research |
Direitos |
restrictedAccess Copyright Springer Science+Business Media Dordrecht |
Palavras-Chave | #Synthesis #Polythiophene derivatives #Photovoltaic properties #Solar cells #POLÍMEROS (MATERIAIS) #FILMES FINOS #ENERGIA SOLAR |
Tipo |
article original article publishedVersion |