期刊
MATERIALS SCIENCE IN SEMICONDUCTOR PROCESSING
卷 15, 期 4, 页码 371-379出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.mssp.2011.12.004
关键词
Nanoparticle; Titanium dioxide; Porous structure; DSSCs; Annealing temperature
类别
资金
- Iran government grant
Dye-sensitized solar cells (DSSCs) were fabricated from porous electrodes derived from sol-gel-synthesized (SGS) nanoparticles (NPs) of TiO2. Current-voltage measurements were performed to investigate performance characteristics of electrodes derived from SGS-NPs of TiO2 annealed at different temperatures. Experimental results indicate that the effects of bulk traps and surface states within TiO2 films on recombination of photo-injected electrons in DSSCs depend upon annealing temperature of SGS-TiO2 NPs. Moreover, electrodes fabricated from SGS-TiO2 showed higher photoelectric conversion efficiency than nonporous commercial (P25) TiO2 NPs. Porous structures within SGS-TiO2 NPs are of great benefit to sensitizer dye adsorption, and consequently to improvement of photo-electrochemical properties of DSSCs. (C) Elsevier Ltd. All rights reserved.
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