Fabrication of Electron Passes in Nano-TiO2 Layer by High-Velocity Oxy-Fuel Method for Dye-Sensitized Solar Cells
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概要
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Necking among titania nanoparticles in porous titania layers of dye-sensitized solar cells (DSC) was carried out by the collision of nanoparticles in a very fast gas flow of more than 1000--1500 m/s. where the substrate was held in an ambient atmosphere. The rapid gas flow was obtained by a high velocity oxy-fuel method (HVOF) operated at an intermediate temperature. The photovoltaic performance of a cell prepared by the HVOF method was slightly lower than that of DSCs fabricated by a conventional method involving coating-baking processes. The slightly low efficiency was explained by the small dye load and slightly lower electron diffusion coefficient in a porous titania layer. The time needed for fabricating a nanoporous titania layer ($10 \times 10$ cm2) by the HVOF method was only a few minutes and was extremely shortened from the 2 h needed in the case of conventional coating and heating processes, which demonstrates that the HVOF method is useful for necking titania nanoparticles within an extremely short time.
- 2011-02-25
著者
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Hayase Shuzi
Kyushu Inst. Of Technol.
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Hayase Shuzi
Kyushu Institute of Technology, Kitakyushu 808-0196, Japan
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Nishimura Terumi
Kyushu Institute of Technology, Kitakyushu 808-0196, Japan
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Nomura Daishiro
Kyushu Institute of Technology, Kitakyushu 808-0196, Japan
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Sakaguchi Shohhei
Fujiko, Ltd., Kitakyushu 804-0054, Japan
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Nagayoshi Hideaki
Fujiko, Ltd., Kitakyushu 804-0054, Japan
関連論文
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