Crystal structure and photoluminescence properties of novel garnet Y 2-x LaCaGa 3 ZrO 12 :xLn 3+ (Ln = Eu and Tb) phosphors

D. A. Hakeem, D. H. Kim, S. W. Kim, K. Park

Research output: Contribution to journalArticlepeer-review

23 Citations (Scopus)

Abstract

A series of novel garnet Y 2-x LaCaGa 3 ZrO 12 :xLn 3+ (0 ≤ x ≤ 0.12; Ln = Eu and Tb) phosphors was prepared by a solid-state reaction. Their structural and photoluminescence properties were characterized by X-ray diffraction, Rietveld refinement, and photoluminescence spectroscopy. The studied Y 2-x LaCaGa 3 ZrO 12 :xLn 3+ phosphors crystallized in a cubic garnet crystal structure and Ia3¯d space group. The Eu 3+ - and Tb 3+ -doped Y 2-x LaCaGa 3 ZrO 12 phosphors exhibited strong red and green light emissions, respectively, and high emission color purity. With increasing Tb 3+ content, the emitting color of the Y 2-x LaCaGa 3 ZrO 12 :xTb 3+ phosphors shifted to the green spectral region because of cross-relaxation among Tb 3+ ions. The Y 2-x LaCaGa 3 ZrO 12 :xLn phosphors are suitable for applications in white light-emitting diode and other optoelectronic devices.

Original languageEnglish
Pages (from-to)715-724
Number of pages10
JournalDyes and Pigments
Volume163
DOIs
Publication statusPublished - 2019 Apr
Externally publishedYes

Keywords

  • Emission
  • Phosphor
  • Photoluminescence
  • Y LaCaGa ZrO

ASJC Scopus subject areas

  • Chemical Engineering(all)
  • Process Chemistry and Technology

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