Bulletin of the Korean Chemical Society

Korean Chemical Society (대한화학회)
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The Application of TiO2 Hollow Spheres on Dye-sensitized Solar Cells

  • Cho, H. J. (Department of Chemistry and Institute of Basic Natural Sciences, Wonkwang University) ;
  • Jung, D. (Department of Chemistry and Institute of Basic Natural Sciences, Wonkwang University)
  • Received : 2011.08.03
  • Accepted : 2011.10.22
  • Published : 2011.12.20
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Abstract

$TiO_2$ hollow spheres were fabricated by using $SiO_2$ as an inorganic template. Spherical $SiO_2$ particles were coated by $TiO_2$ through the nucleation process, and then the core $SiO_2$ part was eliminated by using HF solution. Finally, $TiO_2$ hollow spheres were obtained. The size of the $TiO_2$ hollow spheres was about 300-400 nm and the thickness of the hollow wall was about 20-30 nm. The hollow has several holes whose diameters were within 100-200 nm. Dye-sensitized solar cells fabricated by using the $TiO_2$ hollow spheres were characterized. The solar conversion efficiency of the cell was 8.45% when $TiO_2$ hollow spheres were used as a scattering material, while it was 4.59% when $TiO_2$ hollow spheres were used as a normal electrode material.

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