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Title: Effects of Ti Content on the Optical and Structural Properties of the Ti-doped ZnO Nanoparticles
Authors: Tseng, Yu-Chih;Lin, Yow-Jon;Chang, Hsing-Cheng;Chen, Ya-Hui;Liu, Chia-Jyi;Zou, Yi-Yan
Contributors: 光電科技研究所
Keywords: Defect;Doping;Photoluminescence;Raman scattering;ZnO
Date: 2012-02
Issue Date: 2013-10-02T08:37:33Z
Publisher: Elsevier B. V.
Abstract: 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.
Relation: Journal of Luminescence, 132(2): 491-494
Appears in Collections:[Graduate Institute of Photonics Technologies] Periodical Articles

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