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(Referência obtida automaticamente do Web of Science, por meio da informação sobre o financiamento pela FAPESP e o número do processo correspondente, incluída na publicação pelos autores.)

Photophysical and photovoltaic properties of a polymer-fullerene system containing CdSe nanoparticles

Texto completo
Autor(es):
de Carvalho Alves, Joao Paulo [1] ; de Freitas, Jilian Nei [1] ; Zambon Atvars, Teresa Dib [1] ; Nogueira, Ana Flavia [1]
Número total de Autores: 4
Afiliação do(s) autor(es):
[1] Univ Estadual Campinas, UNICAMP, Inst Chem, BR-13083970 Campinas, SP - Brazil
Número total de Afiliações: 1
Tipo de documento: Artigo Científico
Fonte: Synthetic Metals; v. 164, p. 69-77, JAN 15 2013.
Citações Web of Science: 7
Resumo

In this report, the photophysical studies and the photovoltaic performance of the P3HT:PCBM system containing CdSe nanoparticles were investigated. The addition of CdSe into P3HT:PCBM system promoted a decrease in the photocurrent and in the efficiency of the solar cells. The reduction in photocurrent and efficiency observed after addition of even small portions of CdSe can be associated to a strong interaction between polymer and CdSe nano particles, as evidenced by absorption and emission measurements. To investigate the possible contribution of a morphological effect induced by CdSe in P3HT:PCBM film, atomic force microscopy images were also obtained. To get a better understanding of how this ternary system works, comparison was made with another system: PCBM:CdSe and poly(9,9-n-dihexyl-2,7-fluorenylenevinylene-alt-2,5-thienylenevinylene (PET), as reported by de Freitas et al. {[}Journal of Material Chemistry 20 (2010) 4845]. Our results indicate that the chemical structure of the chosen polymer is an important issue in ternary systems and, and that P3HT, a polymer whose chain contains a large concentration of thiophene units, favors polymer-nanoparticle aggregation. (c) 2012 Elsevier B.V. All rights reserved. (AU)

Processo FAPESP: 09/15428-0 - Células fotovoltaicas híbridas com nanopartículas inorgânicas: investigação da função das nanopartículas e desenvolvimento de dispositivos mais eficientes
Beneficiário:Jilian Nei de Freitas
Linha de fomento: Bolsas no Brasil - Pós-Doutorado
Processo FAPESP: 08/53059-4 - Células solares orgânicas e híbridas baseadas em nanotubos de carbono e fulerenos modificados
Beneficiário:Luiz Carlos Pimentel Almeida
Linha de fomento: Bolsas no Brasil - Doutorado
Processo FAPESP: 11/51593-6 - Células solares orgânicas e híbridas de filmes finos
Beneficiário:Ana Flávia Nogueira
Linha de fomento: Auxílio à Pesquisa - Regular