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

Yu Chih Tseng, Yow Jon Lin, Hsing Cheng Chang, Ya Hui Chen, Chia Jyi Liu, Yi Yan Zou

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23 Citations (Scopus)

Abstract

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 Ti 0.10Zn0.90O 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.

Original languageEnglish
Pages (from-to)491-494
Number of pages4
JournalJournal of Luminescence
Volume132
Issue number2
DOIs
Publication statusPublished - 2012 Feb 1

All Science Journal Classification (ASJC) codes

  • Biophysics
  • Biochemistry
  • Chemistry(all)
  • Atomic and Molecular Physics, and Optics
  • Condensed Matter Physics

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