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http://dx.doi.org/10.5012/bkcs.2011.32.12.4382

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)
Publication Information
Bulletin of the Korean Chemical Society / v.32, no.12, 2011 , pp. 4382-4386 More about this Journal
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.
Keywords
Template method; Hollow $TiO_2$; Electronic materials; Dye-sensitized solar cells;
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