Fabrication and Characterization of Dye-Sensitized Solar Cell Using TiO2-Nanotube Particles by Anodic Oxidation
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概要
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Anodic oxidation of Ti metal was performed in an ethylene glycol electrolyte with small addition of H2O and NH4F at 60 V. Ti metal plate with a thickness of 100 μm was completely converted into ${\sim}200$ μm thick membrane of highly ordered TiO2 nanotube (NT) arrays. TiO2 NT arrays are grown in vertical direction to both faces of the Ti-plate. As-fabricated NT membrane is mechanically grinded to yield fine individual NT particles for the photoanode application to dye-sensitized solar cells (DSCs) in replacement of conventional TiO2 particles. Photoconversion efficiency of the DSC using crystalline NT particles is ${\sim}7.0$%. It can be further improved by controlling TiO2 NT particle dimensions to increase dye attachment, and electron lifetime and mobility due to high surface to volume ratio and less defect density.
- 2009-08-25
著者
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Sung Youl-moon
Department Of Electrical And Electronic Engineering Miyazaki University
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Chun Ki-Young
Department of Materials Engineering, Kyungsung University, Busan 608-736, Korea
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Park Min-Woo
Department of Materials Engineering, Kyungsung University, Busan 608-736, Korea
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Kwak Dong-Joo
Department of Electrical Engineering, Kyungsung University, Busan 608-736, Korea
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Sung Youl-Moon
Department of Electrical Engineering, Kyungsung University, Busan 608-736, Korea
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