Production of phosphor (YAG: Tb) fine particles by hydrothermal synthesis in supercritical water

Yukiya Hakuta, Kazuci Scino, Haruo Ura, Tadafumi Adschiri, Hirotsugu Takizawa, Kunio Aral

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159 Citations (Scopus)

Abstract

Rapid and continuous production of phosphor (YAG : Tb) fine particles by hydrothermal synthesis in supercritical water was studied. At temperatures higher than the critical temperature of water, continuous and rapid (>60s) production of YAG:Tb fine particles was achieved. Emission spectra obtained by UV excitation of the particles were in agreement with the typical spectral pattern of YAG : Tb. Single phase YAG : Tb was produced by using stoichiometric mixtures of metal salts [Al(NO3)3, Y(NO3)3, and TbCl3] as aqueous solutions with an alkali molar ratio {[OH-]/([NO3-] + [C1-])} of 1 and a rapid heating method. No additional thermal treatment was necessary to obtain crystalline products.

Original languageEnglish
Pages (from-to)2671-2674
Number of pages4
JournalJournal of Materials Chemistry
Volume9
Issue number10
DOIs
Publication statusPublished - 1999 Jan 1

ASJC Scopus subject areas

  • Chemistry(all)
  • Materials Chemistry

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