Correlation of photoluminescence of (Y, Ln)VO4:Eu3+ (Ln=Gd and La) phosphors with their crystal structures

Jong Hyuk Kang, Won Bin Im, Dong Chin Lee, Jin Young Kim, Duk Young Jeon, Yun Chan Kang, Kyeong Youl Jung

Research output: Contribution to journalArticlepeer-review

64 Citations (Scopus)

Abstract

We have studied the photoluminescence (PL) of (Y, Ln)VO4:Eu 3+ (Ln=La and Gd) phosphors and the correlation of the PL of those phosphor with their crystal structure. It is found that (Y, Gd)VO 4:Eu3+ phosphors have the same crystal structure as YVO4:Eu3+, which is tetragonal with a little different lattice parameters. In the case of (Y, La)VO4:Eu3+ phosphors, however, the gradual change from tetragonal to monoclinic structure of host lattice was observed as the amount of La ion increased. To investigate the PL property of (Y, Ln)VO4:Eu3+ (Ln=La and Gd) phosphors, vacuum ultraviolet (VUV) and ultraviolet (UV) excitation were used. The favorable crystal structure for the PL intensity of orthovanadate phosphor under 147 and 254 nm excitation was tetragonal containing Gd ion and under 365 nm excitation was monoclinic containing La ion which might have the lowest site symmetry for Eu3+ ion.

Original languageEnglish
Pages (from-to)651-656
Number of pages6
JournalSolid State Communications
Volume133
Issue number10
DOIs
Publication statusPublished - 2005 Mar

Keywords

  • A. Phosphor
  • A. YVO:Eu
  • D. Optical properties
  • E. Luminescence

ASJC Scopus subject areas

  • Chemistry(all)
  • Condensed Matter Physics
  • Materials Chemistry

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