Novel ultraviolet photoluminescence of ZnO/ZnGa 2 O 4 composite layers

Qing Yang, Yu Saeki, Sotaro Izumi, Takao Nukui, Atsushi Tackeuchi, Akihiro Ishida, Hirokazu Tatsuoka

Research output: Contribution to journalArticle

10 Citations (Scopus)

Abstract

ZnO/ZnGa 2 O 4 composite layers were synthesized by simple thermal oxidation of ZnS substrates with gallium in the air. The continuous-wave and time-resolved photoluminescence measurements for the composites were performed at room temperature. It is found that the visible deep level emission from ZnO in ZnO/ZnGa 2 O 4 composite layer was almost suppressed. In addition, the UV emission with long lifetime was also observed in comparison with that of pure ZnO layer without ZnGa 2 O 4 .

Original languageEnglish
Pages (from-to)6928-6931
Number of pages4
JournalApplied Surface Science
Volume256
Issue number22
DOIs
Publication statusPublished - 2010 Sep 1

Keywords

  • Gallium
  • Relaxation
  • Thermal oxidation
  • Ultraviolet photoluminescence

ASJC Scopus subject areas

  • Chemistry(all)
  • Condensed Matter Physics
  • Physics and Astronomy(all)
  • Surfaces and Interfaces
  • Surfaces, Coatings and Films

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