Evolution of visible luminescence in ZnO by thermal oxidation of zinc films

Y. G. Wang, Shu Ping Lau, X. H. Zhang, H. W. Lee, Siu Fung Yu, B. K. Tay, H. H. Hng

Research output: Journal article publicationJournal articleAcademic researchpeer-review

72 Citations (Scopus)

Abstract

Zinc oxide (ZnO) films were prepared by thermal oxidation of metallic zinc films. The intensities of visible luminescence increase with oxidation time; however the shape and position of the green and yellow luminescence bands are determined by oxidation temperature only and do not vary with oxidation time and excitation laser powers. The green and yellow luminescent bands should originate from different intrinsic defects or defect complexes, which are formed in ZnO at certain temperatures. It suggests that the possibility of donor-acceptor pair recombination as the mechanism responsible for the green and yellow emissions can be excluded.
Original languageEnglish
Pages (from-to)113-118
Number of pages6
JournalChemical Physics Letters
Volume375
Issue number1-2
DOIs
Publication statusPublished - 25 Jun 2003
Externally publishedYes

ASJC Scopus subject areas

  • Physics and Astronomy(all)
  • Physical and Theoretical Chemistry

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