Luminescence enhancement mechanism of ZnGa2O4 phosphor screen with an In2O3 buffer layer

Su Hua Yang, Chien Yuan Lu, Shoou Jinn Chang

Research output: Contribution to journalArticle

2 Citations (Scopus)

Abstract

The luminescence enhancement mechanism of a white Zn Ga2 O4 phosphor screen with an In2 O3 buffer layer was studied by growing Zn Ga2 O4 with optimal sputtering parameters and varying the deposition conditions of In2 O3. A Zn Ga2 O4 film with better crystallization and smaller grains was obtained when it was deposited on In2 O3. These qualities revealed that the resistivity of the phosphor screen was correlated with the surface roughness and resistivity of the In2 O3 buffer layer. The photoluminescence spectra of the phosphor screen revealed that the ligand field of the Ga luminescence center was not modified when the In2 O3 deposition parameters were varied; however, the emission intensities were altered due to the electron-transition probability in the Ga energy levels changing with the crystallization of phosphor. A significantly enhanced emission from the phosphor screen was observed by improving the crystallization, surface morphology, and resistivity of the prepared Zn Ga2 O4 phosphor film with the In2 O3 buffer layer.

Original languageEnglish
Pages (from-to)J229-J233
JournalJournal of the Electrochemical Society
Volume154
Issue number8
DOIs
Publication statusPublished - 2007 Jul 6

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Renewable Energy, Sustainability and the Environment
  • Surfaces, Coatings and Films
  • Electrochemistry
  • Materials Chemistry

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