Optical and electric properties of Nb-doped anatase TiO2 single crystal

被引：48

作者：

Das Mulmi, D

Sekiya, T

Kamiya, N

Kurita, S

Murakami, Y

Kodaira, T

机构：

[1] Yokohama Natl Univ, Fac Engn, Dept Phys, Yokohama, Kanagawa 2408501, Japan

[2] AIST, Nanoarchitechton Res Ctr, Tsukuba, Ibaraki 3058500, Japan

来源：

JOURNAL OF PHYSICS AND CHEMISTRY OF SOLIDS | 2004年 / 65卷 / 06期

关键词：

oxides; crystal growth; electrical properties; optical properties;

D O I：

10.1016/j.jpcs.2003.12.009

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Nb-doped anatase TiO2 single crystal has been grown by chemical vapour transport method. Raman spectra shows that the obtained crystal with Nb of 0.08 wt% has typical anatase structure. An absorption band was observed at around 2.2 eV, which seems to be due to the d-d transition in the conduction band. The electron paramagnetic resonance and electric resistivity measurements show that the doped niobium makes quite shallow donor level whose orbital is d(xy)-like centered at the titanium position of anatase. (C) 2004 Elsevier Ltd. All rights reserved.

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页码：1181 / 1185

页数：5

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