Effects of particle size of raw materials on phase formation and optical properties of Ce3+-doped Y3Al5O12 phosphors

Shinnosuke Akiyama, Riho Moriyama, Junya Tanaka, Yasushi Sato, Masato Kakihana, Hideki Kato

Research output: Contribution to journalArticlepeer-review

Abstract

The effects of the particle size of the Al2O3 raw material on the phase formation and optical properties of Ce3+-doped Y3Al5O12 (YAG:Ce3+) phosphors prepared by a solid-state reaction were investigated, along with the crystallinities, photoluminescent properties, and Ce3+ contents of the phosphors. Reducing both the Al2O3 particle size and distribution influenced the efficient formation of the YAG phase, with the final YAG phase content increasing from 48.4% to 83.5%. The amount of Ce3+ also increased with the formation of the YAG phase, and the external quantum efficiency was improved by a factor of ∼1.4. Considering both the particle size and the size distribution is important when selecting raw materials, which provides an effective way of optimizing phosphor performance.

Original languageEnglish
Article number111549
JournalOptical Materials
Volume121
DOIs
Publication statusPublished - 2021 Nov

Keywords

  • AlO
  • Photoluminescence
  • Raw material size effect
  • Solid-state reaction
  • YAlO:Ce phosphor

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Atomic and Molecular Physics, and Optics
  • Spectroscopy
  • Physical and Theoretical Chemistry
  • Organic Chemistry
  • Inorganic Chemistry
  • Electrical and Electronic Engineering

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