Electronic structure of titanium oxide nanotubules

被引：45

作者：

Hong, J ^{[1
]}

Cao, J ^{[1
]}

Sun, JZ ^{[1
]}

Li, HY ^{[1
]}

Chen, HZ ^{[1
]}

Wang, M ^{[1
]}

机构：

[1] Zhejiang Univ, Inst Polymer Composites, Dept Polymer Sci & Engn, State Key Lab Silicon Mat, Hangzhou 310027, Peoples R China

来源：

CHEMICAL PHYSICS LETTERS | 2003年 / 380卷 / 3-4期

基金：

中国国家自然科学基金;

关键词：

D O I：

10.1016/j.cplett.2003.09.037

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：

We investigated the electronic states of titanium oxide nanotubules (TiOx-NTs) by using field induced surface photovoltage spectroscopy (FISPS). Compared with common TiO2 P25 nanocrystals, new surface photovoltage response hands extending to 550 nm were found under the effect of external electric field. Based on the principle of FISPS, these responses were ascribed to the surface state transitions. X-ray diffraction (XRD) indicated that the crystalline structure changed remarkable during the hydrothermal synthesis process. The existence of oxygen vacancies contributing to the surface states was further confirmed by the sub-band gap photoluminescence. (C) 2003 Elsevier B.V. All rights reserved.

引用

页码：366 / 371

页数：6

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