Effects of Ti content on the optical and structural properties of the Ti-doped ZnO nanoparticles

被引：28

作者：

Tseng, Yu-Chih ^{[2
]}

Lin, Yow-Jon ^{[1
]}

Chang, Hsing-Cheng ^{[3
]}

Chen, Ya-Hui ^{[4
]}

Liu, Chia-Jyi ^{[2
]}

Zou, Yi-Yan ^{[2
]}

机构：

[1] Natl Changhua Univ Educ, Inst Photon, Changhua 500, Taiwan

[2] Natl Changhua Univ Educ, Dept Phys, Changhua 500, Taiwan

[3] Feng Chia Univ, Dept Automat Control Engn, Taichung 407, Taiwan

[4] Feng Chia Univ, Ph D Program Elect & Commun Engn, Taichung 407, Taiwan

来源：

JOURNAL OF LUMINESCENCE | 2012年 / 132卷 / 02期

关键词：

ZnO; Photoluminescence; Raman scattering; Defect; Doping; SEMICONDUCTOR-METAL TRANSITION; FILMS; RF;

D O I：

10.1016/j.jlumin.2011.08.016

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

This study investigates the effect of Ti content on the optical and structural properties of the Ti-doped ZnO (Ti(x)Zn(1-x)O) nanoparticles by x-ray diffraction, scanning electron microscopy, photoluminescence and Raman scattering measurements. A dependence of luminescent properties and crystal structure upon Ti content has been found. The band-edge-luminescence (BEL) intensity of Ti(0.10)Zn(0.90)O at room temperature was nearly 1.7 times higher than that of ZnO. The enhanced BEL intensity is attributed to a decrease in the oxygen-vacancy density. However, the lower BEL intensity of Ti(0.15)Zn(0.85)O than Ti(0.10)Zn(0.90)O is attributed to an increase in the probability of nonradiative recombination. In addition, the intensity of the x-ray diffraction peaks remarkably decreases with increasing Ti content, suggesting weakened crystallinity. (C) 2011 Elsevier B.V. All rights reserved.

引用

页码：491 / 494

页数：4

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