Abstract:

Nanocrystalline TiO² is one of the important compositions in dye sensitized solar cell. To control the size and phase of the nanocrystalline TiO² in the process of the sol gel, the heat treat method and the results of the experiment have been greatly introduced. The D hkl(a) of anatase nanocrystalline TiO² increases with the temperature raising and there is 43% rutile nanocrystalline TiO² in the powders when temperature reach 270℃ and hydrolyze pH～1. The results show that the D hkl(r) of rutile nanocrystalline TiO² is larger than the D hkl(a) of anatase nanocrystalline TiO². Applying the nanocrystalline TiO² in solar cell, the result that measured by the automatic measuring and data acquisition system prove good efficiency with right temperature.

Key words: nanocrystalline TiO², sol gel, solar cell, efficiency