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Effect of post-thermal annealing on properties of ZnO thin film grown on c-Al2O3 by metal-organic chemical vapor deposition

  • Xiaotian Yang
  • , Guotong Du*
  • , Xinqiang Wang
  • , Jinzhong Wang
  • , Boyang Liu
  • , Yuantao Zhang
  • , Dan Liu
  • , Dali Liu
  • , H. C. Ong
  • , Shuren Yang
  • *Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

Abstract

In this paper, high-quality ZnO film was grown by metal-organic chemical vapor deposition. Post-thermal annealing was performed on ZnO film in vacuum and oxygen condition. We could find only the X-ray diffraction pattern of (0 0 2) ZnO film indicating strong c-oriented growth. The quality of ZnO film was improved by thermal annealing in vacuum as confirmed by XRD and photoluminescence measurement. Raman scattering on as-grown ZnO film indicated that the quality of ZnO film was improved by thermal annealing in oxygen. The intensity of deep-level emission increased much after annealing in oxygen, while it nearly did not change after annealing in vacuum. We believed that the deep-level emission was related to zinc vacancy. The resistivity increased from 2.4 to 1100 Ωcm after thermal annealing in oxygen.

Original languageEnglish
Pages (from-to)275-278
Number of pages4
JournalJournal of Crystal Growth
Volume252
Issue number1-3
DOIs
StatePublished - May 2003
Externally publishedYes

Keywords

  • A3. Metalorganic chemical vapor deposition
  • B1. Oxides
  • B2. Semiconducting II-VI materials

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