National Changhua University of Education Institutional Repository : Item 987654321/17459
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题名: Effects of Ti Content on the Optical and Structural Properties of the Ti-doped ZnO Nanoparticles
作者: Tseng, Yu-Chih;Lin, Yow-Jon;Chang, Hsing-Cheng;Chen, Ya-Hui;Liu, Chia-Jyi;Zou, Yi-Yan
贡献者: 光電科技研究所
关键词: Defect;Doping;Photoluminescence;Raman scattering;ZnO
日期: 2012-02
上传时间: 2013-10-02T08:37:33Z
出版者: Elsevier B. V.
摘要: This study investigates the effect of Ti content on the optical and structural properties of the Ti-doped ZnO (Ti xZn 1-xO) 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 0.10Zn 0.90O 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 0.15Zn 0.85O than Ti 0.10Zn 0.90O 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.
關聯: Journal of Luminescence, 132(2): 491-494
显示于类别:[光電科技研究所] 期刊論文

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