Luminescence ofbarium aluminate phosphors activated by Eu2+ and Dy3+

被引：16

作者：

Matsui, Kazunori ^{[1
]}

Arima, Mikio ^{[1
]}

Kanno, Hitoshi ^{[2
]}

机构：

[1] Kanto Gakuin Univ, Coll Engn, Dept Appl Mat & Life Sci, Yokohama, Kanagawa 2368501, Japan

[2] Natl Def Acad, Dept Appl Chem, Yokosuka, Kanagawa 2398686, Japan

来源：

OPTICAL MATERIALS | 2013年 / 35卷 / 11期

关键词：

Afterglow; Phosphors; Barium aluminate; Europium; Dysprosium; BAAL2O4-EU2+; BARIUM; ENERGY;

D O I：

10.1016/j.optmat.2012.12.002

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Long afterglow barium aluminate phosphors activated by Eu2+ and Dy3+ were successfully prepared with various Al/Ba ratios from 2 to 5 and sintering temperatures from 1050 to 1400 degrees C. XRD measurements revealed that the content of the BaAl12O19 crystalline phase increases with increasing Al/Ba ratios and sintering temperature. In accord with these results, the luminescence spectra showed a peak shift from 500 (due to BaAl2O4:Eu2+) to 440 nm (due to BaAl12O19:Eu2+) when the sintering temperature was increased from 1050 to 1400 degrees C. The spectral changes and afterglow characteristics were closely related to the relative contents of the BaAl2O4 and BaAl12O19 phases. (C) 2012 Elsevier B.V. All rights reserved.

引用

页码：1947 / 1951

页数：5

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