High brightness LaPO4:Ce,Tb phosphor particles with spherical shape

Yun Chan Kang, Eun Joung Kim, Dong Youl Lee, Hee Dong Park

Research output: Contribution to journalArticle

97 Citations (Scopus)

Abstract

Green-emitting LaPO4:Ce,Tb phosphor particles were synthesized by a large-scale spray pyrolysis. The prepared phosphor particles had a completely spherical shape, fine size, and high brightness under ultraviolet. The phosphor particles had the maximum photoluminescence intensity after posttreatment at 1300°C even without flux material. The phosphor particles had a spherical shape and non-aggregation characteristics. The types of phosporous source affected the morphological characteristics and photoluminescence of the prepared particles. Particles prepared from a solution with ammonium hydrogen phosphate had a higher brightness than those prepared from solutions with ammonium dihydrogen phosphate, ammonium phosphate, or phosphoric acid. The maximum brightness of particles prepared by spray pyrolysis was 109% that of the commercial product with non-spherical shape and large size.

Original languageEnglish
Pages (from-to)266-270
Number of pages5
JournalJournal of Alloys and Compounds
Volume347
Issue number1-2
DOIs
Publication statusPublished - 2002 Dec 16
Externally publishedYes

    Fingerprint

Keywords

  • Chemical synthesis
  • Optical materials
  • Optical spectroscopy
  • Rare earth compounds

ASJC Scopus subject areas

  • Mechanics of Materials
  • Mechanical Engineering
  • Metals and Alloys
  • Materials Chemistry

Cite this