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

doi:10.1039/a903074c

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

Tohoku University

Research output: Contribution to journal › Article › peer-review

164 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^-]/([NO^3-] + [C1^-])} of 1 and a rapid heating method. No additional thermal treatment was necessary to obtain crystalline products.

Original language	English
Pages (from-to)	2671-2674
Number of pages	4
Journal	Journal of Materials Chemistry
Volume	9
Issue number	10
DOIs	https://doi.org/10.1039/a903074c
Publication status	Published - 1999

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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.",

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T1 - Production of phosphor (YAG : Tb) fine particles by hydrothermal synthesis in supercritical water

AU - Hakuta, Yukiya

AU - Scino, Kazuci

AU - Ura, Haruo

AU - Adschiri, Tadafumi

AU - Takizawa, Hirotsugu

AU - Aral, Kunio

PY - 1999

Y1 - 1999

N2 - 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.

AB - 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.

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

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