期刊
CHEMSUSCHEM
卷 4, 期 10, 页码 1498-1503出版社
WILEY-BLACKWELL
DOI: 10.1002/cssc.201100060
关键词
electron transport; mesoporous materials; photoanode; solar cells; titanium
资金
- Australian Research Council [DP0985744, FT0990583]
Mesoporous TiO2 beads with diameters of 320 +/- 50, 550 +/- 50, and 830 +/- 40 nm, comprising interconnected and densely packed TiO2 nanocrystals, were used as working electrodes for dye-sensitized solar cells (DSCs). These electrodes possess high surface areas and superior light-scattering properties, which are ideal for DSC applications. Although the electrode prepared by using 320 +/- 50 nm beads demonstrated the highest dye loading and the electrode prepared by using 550 +/- 50 nm beads showed the best light-scattering properties in the wave-length region lambda = 400-800 nm, DSC devices with working electrodes composed of 830 +/- 40 nm beads achieved the highest power conversion efficiencies of 9.0% after treatment with TiCl4. A higher electron diffusion rate (4.35 x 10(-4) cm(2) s(-1)) and an extended electron lifetime (58 ms) were observed in DSCs composed of the largest beads, 830 +/- 40 nm, attributable to a reduced amount of inter-bead barriers and a relatively small percentage of TiO2 nanocrystals on the surface of the beads, compared to cells containing 550 +/- 50 and 320 +/- 50 nm beads.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据