Optical properties and microstructure of nitrogen-doped SrTiO3

被引：6

作者：

Liu, C. M. ^{[1
]}

Yuan, Z. L. ^{[1
]}

Ju, Y. F. ^{[1
]}

Xiang, X. ^{[1
]}

Zu, X. T. ^{[1
,2
]}

Zhou, W. L. ^{[3
]}

机构：

[1] Univ Elect Sci & Technol China, Dept Appl Phys, Chengdu 610054, Peoples R China

[2] Chinese Acad Sci, Int Ctr Mat Phys, Shenyang 110015, Peoples R China

[3] Univ New Orleans, Adv Mat Res Inst, New Orleans, LA 70148 USA

来源：

CANADIAN JOURNAL OF PHYSICS | 2008年 / 86卷 / 11期

关键词：

D O I：

10.1139/P08-082

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Nitrogen-doped SrTiO3 samples have been successfully prepared by nitrogen-ion implantation. X-ray photoelectron spectra clearly indicate the presence of nitrogen dopants in the crystal lattice of SrTiO3. The ultraviolet-visible absorption spectra of nitrogen-doped SrTiO3 show enhanced visible light absorption in the range of 400-500 nm, which contributs to the localized N 2p state in the band gap of SrTiO3. The resistance coefficient of temperature is positive indicating metallic conducting behavior. The nonlinear dependence of voltage on current at liquid-nitrogen temperatures indicates a possible energy barrier in the grain boundary.PACS Nos.: 72.20.-i, 72.80.Ga, 78.20.-e

引用

页码：1345 / 1348

页数：4

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