Novel green-emitting Na2CaPO4F:Eu2+ phosphors for near-ultraviolet white light-emitting diodes

被引：26
作者：
Huang, Chien-Hao
Chen, Yen-Chi
Kuo, Te-Wen
Chen, Teng-Ming [1 ]
机构：
[1] Natl Chiao Tung Univ, Phosphors Res Lab, Hsinchu 30010, Taiwan
来源：
JOURNAL OF LUMINESCENCE | 2011年 / 131卷 / 07期
关键词：
Phosphors; Na2CaPO4F:Eu2+; Light-emitting diodes; EMISSION-TUNABLE PHOSPHOR; EFFICIENT ENERGY-TRANSFER; LUMINESCENCE; CE3+;
D O I：
10.1016/j.jlumin.2011.02.034
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
In this study, green-emitting Na2CaPO4F:Eu2+ phosphors were synthesized by solid-state reactions. The excitation spectra of the phosphors showed a broad hump between 250 and 450 nm; the spectra match well with the near-ultraviolet (NUV) emission spectra of light-emitting diodes (LEDs). The emission spectrum showed an intense broad emission band centered at 506 nm. White LEDs were fabricated by integrating a 390 nm NUV chip comprising blue-emitting BaMgAl10O17:Eu2+, green-emitting Na2CaPO4F:0.02 Eu2+, and red-emitting CaAlSiN3:Eu2+ phosphors into a single package; the white LEDs exhibited white light with a correlated color temperature of 5540 K. a color-rendering index of 90.75, and color coordinates (0.332, 0.365) close to those of ideal white light. (C) 2011 Elsevier B.V. All rights reserved.
引用
收藏
页码：1346 / 1349
页数：4
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