Characterization and properties of a red and orange Y2O2S-based long afterglow phosphor

被引：185

作者：

Wang, XX ^{[1
]}

Zhang, ZT ^{[1
]}

Tang, ZL ^{[1
]}

Lin, YH ^{[1
]}

机构：

[1] Tsing Hua Univ, Dept Mat Sci & Engn, State Key Lab New Ceram & Fine Proc, Beijing 100084, Peoples R China

来源：

MATERIALS CHEMISTRY AND PHYSICS | 2003年 / 80卷 / 01期

基金：

中国国家自然科学基金;

关键词：

luminescence; afterglow; red and orange phosphor; Y2O2S : Eu;

D O I：

10.1016/S0254-0584(02)00097-4

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Eu3+-activated Y2O2S phosphors co-doped with Ti and Mg ions were prepared. The effect of various sintering atmospheric conditions on the crystalline phases and luminescent properties of the products were investigated in detail. Red and orange long afterglow was observed after phosphors were excited with 365 nm ultraviolet light. The main emission peaks were ascribed to Eu3+ ions transition from D-5(J) (J = 0, 1) to F-7(J) (J = 0, 1, 2, 3, 4), and the phosphorescence lasted for nearly 3 h in the light perception of the dark-adapted human eye (0.32 mcd m(-2)). The phosphorescence mechanism was also investigated. (C) 2002 Published by Elsevier Science B.V.

引用

页码：1 / 5

页数：5