Synthesis and photoluminescence properties of a novel red phosphor SrLaGaO4:Mn4+

Chunyan Jiang, Xin Zhang, Jia Wang, Quanzhong Zhao, Ka-Leung WONG, Mingying Peng*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

22 Citations (Scopus)

Abstract

A novel Mn4+-doped strontium lanthanum gallate red phosphor SrLaGaO4:Mn4+ has been successfully prepared via the conventional solid-state reaction method. Phase purity, photoluminescence excitation/emission spectra, concentration quenching, decay curves, and temperature-dependent photoluminescence have been investigated systematically. SrLaGaO4:Mn4+ phosphor exhibits broad excitation band from 250 to 600 nm and emits intense red light centered at 716 nm arising from spin-forbidden transition, 2E → 4A2 of Mn4+. The optimal dopant concentration of Mn4+ is determined to be 0.2 mol%. Dipole-dipole interaction is supposed to be the mechanism of concentration quenching. The crystal-field strength Dq, the Racah parameters B and C, and the nephelauxetic ratio β1 of SrLaGaO4:Mn4+ have been calculated according to its luminescent spectra. Our systematic investigation on this new phosphor can provide a reference for the development of red-emitting phosphor.

Original languageEnglish
Pages (from-to)1269-1276
Number of pages8
JournalJournal of the American Ceramic Society
Volume102
Issue number3
DOIs
Publication statusPublished - Mar 2019

Scopus Subject Areas

  • Ceramics and Composites
  • Materials Chemistry

User-Defined Keywords

  • Mn
  • phosphors
  • photoluminescence
  • properties

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