Preparation of TiO<SUB>2</SUB> Nanocrystalline Electrodes Using Benzoylacetone/Polyethylene Glycol by the Sol-Gel Method and Application to Dye Sensitized Solar Cells

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  • ベンゾイルアセトン/ポリエチレングリコールを用いゾル-ゲル法で作製したTiO<SUB>2</SUB>ナノ結晶電極の特性と色素増感型太陽電池への応用
  • Preparation of TiO2 Nanocrystalline Electrodes Using Benzoylacetone/Polyethylene Glycol by the Sol-Gel Method and Application to Dye Sensitized Solar Cells

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Abstract

TiO2 nanocrystalline electrodes were prepared from titanium tetra-n-butoxide modified with double hydrolysis inhibitors, i.e., benzoylacetone (BzAcH) and polyethylene glycol (PEG), in methanol and ethanol. The correlation between surface structure of the TiO2 electrodes, preparation conditions, and photovoltaic properties of solar cells using the TiO2 electrodes was investigated. The TiO2 electrodes with large roughness value and narrow size distribution of nanocrystals (about 8 nm) were prepared by the addition of BzAcH/PEG in ethanol-rich solvent.The amounts of adsorbed dyes for these TiO2 electrodes were larger than that without PEG. The performance of the solar cell fabricated using the TiO2 electrode improved as the amount of PEG increased.

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