|
Fabrication of Dye-Sensitized Solar Cells by Spray Pyrolysis Deposition (SPD) Technique
|
|
Masayuki Okuya, Koji Nakade, Daisuke Osa, Takafumi Nakano, G.R. Asoka Kumara and Shoji Kaneko
Department of Materials Science and Technology, Shizuoka University, 3-5-1 Johoku, Hamamatsu, 432-8561 Japan |
|
Abstract
Porous TiO2 films were successfully synthesized in air from a commercial TiO2-sol by spray pyrolysis deposition (SPD) technique. The film consisted of fine TiO2 particles, approximately 30-50 nm in size, and showed the roughness factor as high as 1,000. A dye-sensitized solar cell was constructed by SPD technique. In this technique, porous TiO2 / dense TiO2 / SnO2:F junction was prepared within 10-15 minutes, which drastically shortened the fabrication period of working electrodes. The photovoltaic conversion efficiency was enhanced up to 5.1% under the quasi-sunlight of AM-1.5 and 100 mW/cm2 by optimizing the porosity of TiO2 film. The result leads to an industrial production of dye-sensitized solar cells in the near future. J. Photochem. Photobiol., A Chem., Vol.164, pp.167-172 (2004). |