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题名: Effects of Ticontent 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: 物理學系
关键词: ZnO;Photoluminescence;Raman scattering;Defect;Doping
日期: 2012-02
上传时间: 2012-09-10T06:17:07Z
出版者: Elsevier
摘要: This study investigates the effect of Ti content on the optical and structural properties of the Ti-doped ZnO (TixZn1−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 Ti0.10Zn0.90O 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 Ti0.15Zn0.85O than Ti0.10Zn0.90O 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 ofLuminescence, 132(2): 491-494
显示于类别:[物理學系] 期刊論文

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