Photoelectrochemical response from CdSe-sensitized anodic oxidation TiO2 nanotubes

被引：28
|
作者：
Si, Hua-Yan [1 ]
Sun, Zhen-Hong [1 ]
Zhang, Hao-Li [1 ]
机构：
[1] Lanzhou Univ, Coll Chem & Chem Engn, State Key Lab Appl Organ Chem, Lanzhou 730000, Peoples R China
来源：
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS | 2008年 / 313卷
基金：
中国国家自然科学基金; 高等学校博士学科点专项科研基金;
关键词：
TiO2; nanotubes; CdSe; quantum dot; sensitizer; solar cell;
D O I：
10.1016/j.colsurfa.2007.04.160
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
Uniform TiO2 nanotube arrays were fabricated on titanium substrates by self-organized anodic oxidation. CdSe quantum dots (QDs) were assembled onto TiO2 nanotube layers, which serve as sensitizers. The photocurrent measurement shows that annealing is essential to increase the anatase phase and hence increase the photocurrent. Attachment of CdSe QDs dramatically increased the photocurrent of TiO2 nanotubes in the visible region. The photo-response of CdSe sensitized TiO2 also shows strong dependence to the QDs size. The possible mechanism for energy transfer between the CdSe QDs and the TiO2 nanotubes has been discussed. (C) 2007 Elsevier B.V. All rights reserved.
引用
收藏
页码：604 / 607
页数：4
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