Single-phased CaAl2Si2O8:Tm3+, Dy3+ white-light phosphors under ultraviolet excitation

被引：43

作者：

Yang, Penghui ^{[1
]}

Yu, Xue ^{[1
,2
]}

Xu, Xuhui ^{[1
]}

Jiang, Tingming ^{[1
]}

Yu, Hongling ^{[1
]}

Zhou, Dacheng ^{[1
,2
]}

Yang, Zhengwen ^{[1
,2
]}

Song, Zhiguo ^{[1
,2
]}

Qiu, Jianbei ^{[1
,2
]}

机构：

[1] Kunming Univ Sci & Technol, Coll Mat Sci & Engn, Kunming 650093, Peoples R China

[2] Kunming Univ Sci & Technol, Coll Mat Sci & Engn, Key Lab Adv Mat Yunnan Prov, Kunming 650093, Peoples R China

来源：

JOURNAL OF SOLID STATE CHEMISTRY | 2013年 / 202卷

基金：

中国国家自然科学基金; 高等学校博士学科点专项科研基金;

关键词：

Energy transfer; White LED; CaAl2Si2O8; Tm3+ and Dy3+; ENERGY-TRANSFER MECHANISM; LUMINESCENCE; GENERATION; EU2+; CE3+; MN2+;

D O I：

10.1016/j.jssc.2013.03.017

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

A novel white-light-emitting phosphor CaAl2Si2O8:Tm, Dy was synthesized in ambient atmosphere by solid-state reaction. The energy transfer from Tm3+ to Dy3+ ions via a dipole-quadrupole reaction was observed and investigated. Upon UV excitation, white light emission was achieved by integrating a blue emission band located at 455 nm and an orange one located at 574 nm attributed to Tm3+ and Dy3+ ions, respectively. In addition, the energy-transfer efficiency and critical distance were calculated. Results suggested that the phosphor might be promising as a single-phased white-light-emitting phosphor for UV white-light LED. (C) 2013 Elsevier Inc. All rights reserved.

引用

页码：143 / 148

页数：6

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