Fabrication of Eu:SrAl2O4-based glass ceramics using Frozen sorbet method

被引：49

作者：

Nakanishi, Takayuki ^{[1
]}

Katayama, Yumiko ^{[2
]}

Ueda, Jumpei ^{[2
]}

Honma, Tsuyoshi ^{[1
]}

Tanabe, Setsuhisa ^{[2
]}

Komatsu, Takayuki ^{[1
]}

机构：

[1] Nagaoka Univ Technol, Dept Mat Sci & Technol, Nagaoka, Niigata 9402188, Japan

[2] Kyoto Univ, Grad Sch Human & Environm Studies, Kyoto 6118301, Japan

来源：

JOURNAL OF THE CERAMIC SOCIETY OF JAPAN | 2011年 / 119卷 / 1391期

基金：

日本学术振兴会;

关键词：

Strontium aluminates; Persistent luminescence; Glass ceramics; Frozen sorbet; Phosphor; HIGH-BRIGHTNESS; PHOSPHOR; CRYSTALS; SRAL2O4; DY3+; B2O3; EU;

D O I：

10.2109/jcersj2.119.609

中图分类号：

TQ174 [陶瓷工业]; TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

The Frozen sorbet (FS) method is applied to the SrO-Al2O3-B2O3 system in order to fabricate glass ceramics consisting of Eu2+,Dy3+-doped SrAl2O4 phosphors, and their luminescent properties are examined. Through the quenching of melts (e.g., 55SrO-27Al(2)O(3)-18B(2)O(3) with Eu2O3 and Dy2O3), composites (glass ceramics) consisting of the glass phase and SrAl2O4 crystals with a diameter of similar to 40 mu m are fabricated. It is found that SrAl2O4 crystals in the glass ceramics show excellent long persistent phosphorescent properties and improved excitation efficiency at similar to 460 nm in the PL excitation spectra compared with SrAl2O4 phosphors prepared using a conventional solid state reaction. It is suggested that the Al3+-sites in SrAl2O4 crystals are partially substituted by B3+-ions. The present study proposes that the Frozen sorbet method can be a useful technique for the design of new SrAl2O4-based phosphor composites which can be used under white light emitting diode (LED) excitation (similar to 460nm). (C)2011 The Ceramic Society of Japan. All rights reserved.

引用

页码：609 / 615

页数：7

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