Continuous production of phosphor YAG:Tb nanoparticles by hydrothermal synthesis in supercritical water

Yukiya Hakuta; Tsukasa Haganuma; Kiwamu Sue; Tadafumi Adschiri; Kunio Arai

doi:10.1016/S0025-5408(03)00088-6

Continuous production of phosphor YAG:Tb nanoparticles by hydrothermal synthesis in supercritical water

Yukiya Hakuta, Tsukasa Haganuma, Kiwamu Sue, Tadafumi Adschiri, Kunio Arai

Advanced Institute for Materials Research (AIMR)

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

185 Citations (Scopus)

Abstract

Phosphor YAG:Tb ((Y_2.7Tb_0.3)Al₅O₁₂) nano particles were synthesized by a hydrothermal method at supercritical conditions (400 °C and 30 MPa) using a flow reactor. Hydroxide sol solutions formed by stoichiometric aluminum nitrate, yttrium nitrate, terbium nitrate and potassium hydroxide solutions. The relationship between particle size and experimental variables including pH, concentration of coexistent ions and hydroxide sol were investigated. Particles were characterized by XRD, TEM and photo-luminescence measurements. Particle size of YAG:Tb became finer as pH was increased or potassium nitrate concentration of the starting metal salt solution was increased. By removing the coexisting ions (NO₃^-, K⁺) from the metal salt solution, single phase YAG:Tb particles with 20 nm particle size were obtained. The emission spectra of YAG:Tb particles of 14 nm shows a blue shift.

Original language	English
Pages (from-to)	1257-1265
Number of pages	9
Journal	Materials Research Bulletin
Volume	38
Issue number	7
DOIs	https://doi.org/10.1016/S0025-5408(03)00088-6
Publication status	Published - 2003 Jun 19

Keywords

A. Nanostructure
A. Oxides
B. Chemical synthesis
C. X-ray diffraction
D. Luminescence

ASJC Scopus subject areas

Materials Science(all)
Condensed Matter Physics
Mechanics of Materials
Mechanical Engineering

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10.1016/S0025-5408(03)00088-6

Cite this

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title = "Continuous production of phosphor YAG:Tb nanoparticles by hydrothermal synthesis in supercritical water",

abstract = "Phosphor YAG:Tb ((Y2.7Tb0.3)Al5O12) nano particles were synthesized by a hydrothermal method at supercritical conditions (400 °C and 30 MPa) using a flow reactor. Hydroxide sol solutions formed by stoichiometric aluminum nitrate, yttrium nitrate, terbium nitrate and potassium hydroxide solutions. The relationship between particle size and experimental variables including pH, concentration of coexistent ions and hydroxide sol were investigated. Particles were characterized by XRD, TEM and photo-luminescence measurements. Particle size of YAG:Tb became finer as pH was increased or potassium nitrate concentration of the starting metal salt solution was increased. By removing the coexisting ions (NO3-, K+) from the metal salt solution, single phase YAG:Tb particles with 20 nm particle size were obtained. The emission spectra of YAG:Tb particles of 14 nm shows a blue shift.",

keywords = "A. Nanostructure, A. Oxides, B. Chemical synthesis, C. X-ray diffraction, D. Luminescence",

author = "Yukiya Hakuta and Tsukasa Haganuma and Kiwamu Sue and Tadafumi Adschiri and Kunio Arai",

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T1 - Continuous production of phosphor YAG:Tb nanoparticles by hydrothermal synthesis in supercritical water

AU - Hakuta, Yukiya

AU - Haganuma, Tsukasa

AU - Sue, Kiwamu

AU - Adschiri, Tadafumi

AU - Arai, Kunio

PY - 2003/6/19

Y1 - 2003/6/19

N2 - Phosphor YAG:Tb ((Y2.7Tb0.3)Al5O12) nano particles were synthesized by a hydrothermal method at supercritical conditions (400 °C and 30 MPa) using a flow reactor. Hydroxide sol solutions formed by stoichiometric aluminum nitrate, yttrium nitrate, terbium nitrate and potassium hydroxide solutions. The relationship between particle size and experimental variables including pH, concentration of coexistent ions and hydroxide sol were investigated. Particles were characterized by XRD, TEM and photo-luminescence measurements. Particle size of YAG:Tb became finer as pH was increased or potassium nitrate concentration of the starting metal salt solution was increased. By removing the coexisting ions (NO3-, K+) from the metal salt solution, single phase YAG:Tb particles with 20 nm particle size were obtained. The emission spectra of YAG:Tb particles of 14 nm shows a blue shift.

AB - Phosphor YAG:Tb ((Y2.7Tb0.3)Al5O12) nano particles were synthesized by a hydrothermal method at supercritical conditions (400 °C and 30 MPa) using a flow reactor. Hydroxide sol solutions formed by stoichiometric aluminum nitrate, yttrium nitrate, terbium nitrate and potassium hydroxide solutions. The relationship between particle size and experimental variables including pH, concentration of coexistent ions and hydroxide sol were investigated. Particles were characterized by XRD, TEM and photo-luminescence measurements. Particle size of YAG:Tb became finer as pH was increased or potassium nitrate concentration of the starting metal salt solution was increased. By removing the coexisting ions (NO3-, K+) from the metal salt solution, single phase YAG:Tb particles with 20 nm particle size were obtained. The emission spectra of YAG:Tb particles of 14 nm shows a blue shift.

KW - A. Nanostructure

KW - A. Oxides

KW - B. Chemical synthesis

KW - C. X-ray diffraction

KW - D. Luminescence

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DO - 10.1016/S0025-5408(03)00088-6

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SN - 0025-5408

VL - 38

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EP - 1265

JO - Materials Research Bulletin

JF - Materials Research Bulletin

IS - 7

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Continuous production of phosphor YAG:Tb nanoparticles by hydrothermal synthesis in supercritical water

Abstract

Keywords

ASJC Scopus subject areas

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