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

被引：171

作者：

Hakuta, Y

Haganuma, T

Sue, K

Adschiri, T

Arai, K

机构：

[1] AIST, Supercrit Fluid Res Ctr, Miyagino Ku, Sendai, Miyagi 9838551, Japan

[2] Tohoku Univ, Dept Chem Engn, Aoba Ku, Sendai, Miyagi 9838551, Japan

来源：

MATERIALS RESEARCH BULLETIN | 2003年 / 38卷 / 07期

关键词：

nanostructure; oxides; chemical synthesis; X-ray diffraction; luminescence;

D O I：

10.1016/S0025-5408(03)00088-6

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Phosphor YAG:Tb ((Y2.7Tb0.3)Al5O12) nano particles were synthesized by a hydrothermal method at supercritical conditions (400 T 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. (C) 2003 Elsevier Science Ltd. All rights reserved.

引用

页码：1257 / 1265

页数：9

共 21 条

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