Synthesis of SrGa2S4:Mn,Ce and SrGa2S 4:Mn,La phosphors by sulfurization of oxide precursors prepared by an amorphous metal complex method and a micro-gel freezing drying process

Chi Woo Lee, Valery Petrykin, Masato Kakihana

Research output: Contribution to journalArticlepeer-review

4 Citations (Scopus)

Abstract

(Sr0.975Mn0.02Ln0.005)Ga2S 4 (Ln = La and Ce) phosphor materials were synthesized by the sulfurization of oxide-carbonate precursors prepared using aqueous solution processes based on amorphous metal complex method or micro-gel freeze-drying method. As a group, multicomponent sulfide phosphors obtained from the amorphous metal complex precursors demonstrated stronger emission brightness than materials of the same composition synthesized by the micro-gel spray freeze-drying method. (Sr0.975Mn0.02Ce0.005) Ga2S4 phosphor demonstrated blue emission intensity reaching 40% intensity of one of the best commercially available BAM phosphors excited by 408 nm light. (Sr0.975Mn0.02La 0.005)Ga2S4 red phosphor exhibited strong deep red emission when excited by 310 nm light, and in terms of emission intensity it outperformed Ba1.59Sr0.4ZnS4:Eu2+. Nevertheless, the former material can not be excited by visible or near UV light.

Original languageEnglish
Pages (from-to)377-380
Number of pages4
JournalJournal of the Ceramic Society of Japan
Volume117
Issue number1363
DOIs
Publication statusPublished - 2009 Mar

Keywords

  • Amorphous metal complex method
  • Freeze-drying
  • Thiogallate

ASJC Scopus subject areas

  • Ceramics and Composites
  • Chemistry(all)
  • Condensed Matter Physics
  • Materials Chemistry

Fingerprint Dive into the research topics of 'Synthesis of SrGa<sub>2</sub>S<sub>4</sub>:Mn,Ce and SrGa<sub>2</sub>S <sub>4</sub>:Mn,La phosphors by sulfurization of oxide precursors prepared by an amorphous metal complex method and a micro-gel freezing drying process'. Together they form a unique fingerprint.

Cite this