Optical and structural characteristics of yttrium doped ZnO films using sol-gel technology

Po Tsung Hsieh, Ricky Wen Kuei Chuang, Chao Qun Chang, Chih Ming Wang, Shoou Jinn Chang

Research output: Contribution to journalArticlepeer-review

17 Citations (Scopus)

Abstract

Yttrium-doped ZnO gel was spin-coated on the SiO2/Si substrate. The as-prepared ZnO:Y (YZO) thin films then underwent a rapid thermal annealing (RTA) process conducted at various temperatures. The structural and photoluminescence characteristics of the YZO films were discussed thereafter. Our results indicated that the grain size of YZO thin films being treated with various annealing temperatures became smaller as compared to the ones without being doped with yttrium. Furthermore, unlike other ZnO films, the grains of YZO thin films appeared to separate from one another rather than aggregating together as both types of the films were annealed under the same environment. The photoluminescence characteristic measured showed that the UV emission was the only radiation obtained. However, the UV emission intensity of YZO thin film was much stronger than that of the ZnO thin film after annealing them with the same condition. It was also found that the intensity increased with an increase in the annealing temperature, which was caused by the exciton generated and the texture surface of the YZO thin film.

Original languageEnglish
Pages (from-to)42-47
Number of pages6
JournalJournal of Sol-Gel Science and Technology
Volume58
Issue number1
DOIs
Publication statusPublished - 2011 Apr

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Ceramics and Composites
  • Chemistry(all)
  • Biomaterials
  • Condensed Matter Physics
  • Materials Chemistry

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