Dye-sensitized TiO2 nanotube solar cells: fabrication and electronic characterization |
| |
Authors: | Ohsaki Yoshinori Masaki Naruhiko Kitamura Takayuki Wada Yuji Okamoto Takumi Sekino Toru Niihara Kohichi Yanagida Shozo |
| |
Affiliation: | Graduate School of Engineering, Osaka University, 2-1 Yamada-oka, Suita, 5650871, Japan. |
| |
Abstract: | TiO2 nanotubes (TNTs) with large aspect ratio and large specific surface area were prepared from P25 (Nippon Aerosil) and applied to dye-sensitized titanium dioxide solar cells (DSSCs). Optimization of fabrication conditions, i.e., pH of the starting paste, sintering temperature for the TiO2 electrodes, electrolyte compositions of DSSCs gave the high conversion efficiency with improved open circuit voltage (V(oc)) and fill factor (FF) when compared to DSSCs made of P25. The evaluation of dye adsorption and the photo-injected electron transport such as electron diffusion coefficient (D) and electron lifetime (tau) in TNTs electrodes revealed that the higher efficiency resulted from increase of electron density with keeping much longer tau in TNTs electrodes than in P25 electrodes. |
| |
Keywords: | |
本文献已被 PubMed 等数据库收录! |
|