Synthesis of BaAl2S4:Eu2+ electroluminescent material by the polymerizable complex method combined with CS2 sulfurization

Valery Petrykin, Masato Kakihana

Research output: Contribution to journalArticle

12 Citations (Scopus)

Abstract

Eu-activated BaAl2S4 (BaAl2S 4:Eu) blue light emission phosphor has attracted considerable attention recently as a prospective material for full color electroluminescent display applications. Although BaAl2S4:Eu was discovered over 30 years ago, the solid-state reaction between metal sulfides in sealed quartz ampoules remains the main method for the synthesis of this material. In this work, a homogeneous single-phase Ba0.95Eu0.05Al 2S4 (BaAl2S4:Eu) phosphor was obtained by the sulfurization-reduction of the multicomponent oxide precursor in a CS2 atmosphere at 1050°C. The oxide precursor containing barium, aluminum, and europium for this process was prepared by the polymerizable complex method, which ensures a high degree of homogeneity in the final product. The BaAl2S4:Eu material thus obtained exhibited a single emission line at 475 nm and a fluorescence intensity of 35% compared with one of the best commercially available (Ba,Eu)MgAl 10O17 phosphors.

Original languageEnglish
Pages (from-to)S27-S31
JournalJournal of the American Ceramic Society
Volume92
Issue numberSUPPL. 1
DOIs
Publication statusPublished - 2009 Jan 1

ASJC Scopus subject areas

  • Ceramics and Composites
  • Materials Chemistry

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