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Type: Artigo de periódico
Title: Solid-state dye-sensitized solar cell: Improved performance and stability using a plasticized polymer electrolyte
Author: Nogueira, VC
Longo, C
Nogueira, AF
Soto-Oviedo, MA
De Paoli, MA
Abstract: The addition of the plasticizer poly(ethylene glycol)methyl ether to the polymer electrolyte based on poly(epichlorohydrin-co-ethylene oxide), NaI and I-2 increased the ionic conductivity by one order of magnitude (1.7 x 10(-4) S cm(-1)) without compromising its electrochemical, thermal and dimensional stabilities. The plasticized polymer electrolyte presented an estimated diffusion coefficient of 2 x 10(-6) cm(-2) s(-1), ca. five times higher than the diffusion coefficient estimated for the polymer electrolyte without plasticizer. Solid-state dye-sensitized TiO2 solar cells (1 cm(2)) were assembled with the plasticized polymer electrolyte and presented an open circuit potential of 0.64 V, short-circuit current of 0.60 mA cm(-2) and an energy conversion efficiency of 1.75% under light intensity of 10 mW cm(-2). This efficiency remained unchanged for 30 days, showing that cell efficiency and stability can be improved using a plasticized polymer electrolyte. (c) 2005 Elsevier B.V. All rights reserved.
Subject: polymer electrolyte
ionic conductivity
solid-state dye-sensitized TiO2 solar cell
Country: Suíça
Editor: Elsevier Science Sa
Citation: Journal Of Photochemistry And Photobiology A-chemistry. Elsevier Science Sa, v. 181, n. 41700, n. 226, n. 232, 2006.
Rights: fechado
Identifier DOI: 10.1016/j.jphotochem.2005.11.028
Date Issue: 2006
Appears in Collections:Unicamp - Artigos e Outros Documentos

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