Low Temperature Fabrication of Titanium Oxide Composite Films by Hot-Water Treatment and Application for Dye-Sensitized Solar Cells

We found that anatase TiO2 nanocrystals were formed in the titania gel by treating with hot-water at 90°C under ambient pressure. The amount of the precipitated anatase nanocrystals increased with hot-water treatment time. Crystalline TiO2 composite films were successfully prepared from the film com...

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Bibliographic Details
Published in:Denki kagaku oyobi kōgyō butsuri kagaku 2011, Vol.79(10), pp.817-820
Main Authors: SAKAMOTO, Hisatoshi, NOR, M. Arif M., ZAKARIA, N. Hana B., KAWAMURA, Go, MUTO, Hiroyuki, MATSUDA, Atsunori
Format: Article
Language:English
Subjects:
Anatase
Current density
Dye-Sensitized Solar Cell
Dyes
Hot-Water Treatment
Nanocrystals
Nanoparticles
Photovoltaic cells
Sol-Gel Method
Solar cells
Titanium Dioxide
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Summary:We found that anatase TiO2 nanocrystals were formed in the titania gel by treating with hot-water at 90°C under ambient pressure. The amount of the precipitated anatase nanocrystals increased with hot-water treatment time. Crystalline TiO2 composite films were successfully prepared from the film composed of TiO2 (P25) nanoparticles and titania gel by subsequent hot-water treatment at 90°C. TiO2 nanoparticles were interconnected by the sol-gel derived, partially crystallized titania by the continuing hot-water treatment. A dye-sensitized solar cell (DSSC) using the hot-water treated TiO2 composite film showed 1.9 mA cm−2 of short-circuit current density and 0.6 V of open-circuit voltage. The fill factor (ff) and conversion efficiency (η) were 0.63 and 0.71%, respectively.
ISSN:1344-3542
2186-2451
DOI:10.5796/electrochemistry.79.817