Improvement of the photoluminescent intensity of ZnTa2O 6:Pr3+ phosphor

L. L. Noto, O. M. Ntwaeaborwa, M. Y.A. Yagoub, H. C. Swart

Research output: Contribution to journalArticlepeer-review

8 Citations (Scopus)

Abstract

A red emitting ZnTa2O6:Pr3+ phosphor with Commission Internationale de l'Eclairage coordinates that match those of an ideal red emission was prepared by solid state chemical reaction. X-ray diffraction confirmed that a pure orthorhombic phase of ZnTa2O 6 was crystallized. A homogeneous distribution of the Pr3+ ions was confirmed from the analysis of the time of flight secondary ion mass spectroscopy overlay images. In addition to the reflectance at 259 nm associated with band-to-band absorption, minor reflectance peaks associated with f-f transitions of Pr3+ were observed at 420-500 nm. The main red emission peak was split into minor peaks located at 608, 619 and 639 nm that were assigned to 1D2.

Original languageEnglish
Pages (from-to)150-155
Number of pages6
JournalMaterials Research Bulletin
Volume55
DOIs
Publication statusPublished - Jul 2014
Externally publishedYes

Keywords

  • B. Chemical synthesis
  • B. Luminescence
  • C. Secondary ion mass spectroscopy
  • D. Defects
  • D. Optical properties

ASJC Scopus subject areas

  • General Materials Science
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering

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