Optical and structural properties of TiO2 films as a function of Nb doping concentration

被引：6

作者：

Wang, G. Q. ^{[1
,2
,3
]}

Lan, W. ^{[1
,2
,3
]}

Yu, M. L. ^{[2
,3
]}

Han, G. J. ^{[2
,3
]}

Wang, Y. ^{[2
,3
]}

Su, Q. ^{[2
,3
]}

Liu, X. Q. ^{[2
,3
]}

机构：

[1] Lanzhou Univ, Key Lab Magnetism & Magnet Mat, Minist Educ, Lanzhou 730000, Peoples R China

[2] Lanzhou Univ, Dept Phys, Lanzhou 730000, Peoples R China

[3] Lanzhou Univ, Sch Phys Sci & Technol, Lanzhou 730000, Peoples R China

来源：

JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS | 2011年 / 22卷 / 05期

基金：

中国国家自然科学基金;

关键词：

SOL-GEL PROCESS; THIN-FILMS; ANATASE; TEMPERATURE;

D O I：

10.1007/s10854-010-0160-5

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

Ti1-x Nb (x) O-2 (x = 0-0.06) films were prepared on quartz substrates by sol-gel spin coating and characterized by a variety techniques. The effect of Nb doping on the structural and optical properties of Ti1-x Nb (x) O-2 films were mainly investigated by X-Ray diffraction (XRD), Raman spectroscopy, Field-emission scanning electron microscopy and UV-vis transmittance spectroscopy. XRD and Raman study showed that the Nb doping inhibited the grain growth. The grain size decreased from 39.4 to 23.4 nm as the doping concentration increased from 0 to 0.06 in atomic percent. The UV-vis transmittance spectroscopy analysis revealed that the films exhibited 55-65% transmittance in the visible region and the band gap of films became wider with increasing Nb doping concentration.

引用

页码：463 / 466

页数：4

共 19 条

[1]

BRINKER CJ, 1990, SOL GEL SCI, P216

[2] Investigation on TiO2-coated optical fibers for gas-phase photocatalytic oxidation of acetone [J].