Mesoporous TiO<sub>2sub> nanowires as bi-functional materials for dye-sensitized solar cells
- 作者：Sangwook Lee<sup>asup> ; Gill Sang Han<sup>bsup> ; Ji-Hae Lee<sup>csup> ; Jung-Kun Lee<sup>dsup> ; Hyun Suk Jung<sup>bsup><sup> ; sup><sup>hsjung1@skku.edusup>
- 关键词：Dye-sensitized solar cell ; TiO2 ; Nanowire ; Scattering ; Bimodal structure
- 刊名：Electrochimica Acta
- 出版年：2012
- 期刊代码：30_00134686
- 类别：ch
- 出版时间：15 July, 2012
- 卷：74
- 期：Complete
- 页码：83-86
- 文件大小：975 K
摘要
A bimodal structured TiO<sub>2sub> nanowire (NW) was synthesized via metal glycolate-mediated method. Each large NW was comprised of a few nanometers-sized anatase particles, which led to a high specific surface area, 50.4 m<sup>2sup> g<sup>鈭?sup>. When the bimodal TiO<sub>2sub> NWs were coated onto a spherical nanoparticle-based active layer of the photoelectrode for a dye-sensitized solar cell, the reflectance of the photoelectrode increased by 4-times, compared to a bare active layer. The TiO<sub>2sub> NWs increased quantum efficiency of the dye-sensitized solar cell, from 400 to 800 nm wavelengths, which was attributed to both the light-scattering and charge generating effects due to the capability of reflecting incident light and adsorbing large amount of dye molecules.