Deposition of CdS nanoparticles within free-standing both-side-open stretched TiO2 nanotube-array films for the enhancement of photoelectrochemical performance

被引：23
作者：
Liou, Ya-Hsuan [2 ]
Kao, Li-Cheng [2 ]
Tsai, Meng-Che [1 ]
Lin, Chin-Jung [1 ]
机构：
[1] Natl Ilan Univ, Dept Environm Engn, Ilan City, Taiwan
[2] Natl Taiwan Univ, Dept Geosci, Taipei 106, Taiwan
来源：
ELECTROCHEMISTRY COMMUNICATIONS | 2012年 / 15卷 / 01期
关键词：
TiO2; Nanotube; CdS; Photoelectrochemical; SENSITIZED SOLAR-CELLS; QUANTUM DOTS;
D O I：
10.1016/j.elecom.2011.11.029
中图分类号：
O646 [电化学、电解、磁化学];
学科分类号：
081704 ;
摘要：
A heterojunction CdS/TiO2 photoelectrode was prepared using pre-crystallized annealing, followed by solution-based methods, to deposit CdS within the tubes of a free-standing both-side-open TiO2 nanotube-array (TiNT) film. Such open-ended structures make the nanochannels more amenable to CdS deposition compared with close-ended structures, thus preventing entry clogging. In the experiment on photoelectrochemical (PEC) cells, the use of CdS/both-side-open TiNT film allows easy access of the outer light and the electrolyte to the nanochannels because of the uniform CdS deposition within the tubes. As compared to the one-side-close TiNT-based PEC cell, the maximum incident-photon-to-current conversion efficiency at 455 nm is increased from 41% to 68% in the both-side-open TiNT-based device measured at a potential of 0.4 V versus Ag/AgCl under front-side illumination. (C) 2011 Elsevier BM. All rights reserved.
引用
收藏
页码：66 / 69
页数：4
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