Cathodoluminescence of rare-earth-doped zinc aluminate films

Zhidong Lou, Jianhua Hao

Research output: Journal article publicationJournal articleAcademic researchpeer-review

119 Citations (Scopus)

Abstract

Eu-, Tb-, and Tm-doped zinc aluminate (ZnAl2O4) thin film phosphors were prepared by the spray pyrolysis technique at an ambient pressure. The effects of preparation conditions on the cathodoluminescence properties of the films were studied. Films containing Tb3+and Tm3+ions exhibited green and blue cathodoluminescence, respectively. For films doped with europium, both red emission lines from Eu3+and a broad blue-green emission band from Eu2+were observed. The CIE (Commission Internationale de L'Eclairage) chromatic coordinates, dominant wavelength, and color purity were determined for each phosphor. The luminance and efficiency of these phosphors at a current density of 57 μA/cm2are found to be linearly dependent on the excitation voltage.
Original languageEnglish
Pages (from-to)334-340
Number of pages7
JournalThin Solid Films
Volume450
Issue number2
DOIs
Publication statusPublished - 1 Mar 2004
Externally publishedYes

Keywords

  • Deposition process
  • Field emission
  • Luminescence
  • Pyrolysis

ASJC Scopus subject areas

  • Surfaces, Coatings and Films
  • Condensed Matter Physics
  • Surfaces and Interfaces

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