Photoluminescence properties of single component double-color-emitting phosphor Ca5(PO4)3Br:Eu2+,Mn2+ for white LEDs

被引：1
作者：
Sun, Pengfei [1 ]
Deng, Bin [2 ,3 ]
Ding, Ka [1 ]
Sun, Qingxin [1 ]
Huang, Lingyu [1 ]
Yu, Ruijin [1 ,4 ]
机构：
[1] Northwest A&F Univ, Coll Chem & Pharm, Yangling 712100, Shaanxi, Peoples R China
[2] Xiangnan Univ, Coll Chem Biol & Environm Engn, Chenzhou 423043, Hunan, Peoples R China
[3] Hunan Prov Key Lab Xiangnan Rare Precious Met Cpd, Chenzhou 423043, Hunan, Peoples R China
[4] China Three Gorges Univ, Coll Mat & Chem Engn, Key Lab Inorgan Nonmetall Crystalline & Energy Co, Yichang 443002, Hubei, Peoples R China
来源：
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS | 2019年 / 30卷 / 18期
关键词：
ENERGY-TRANSFER; LUMINESCENCE PROPERTIES; TUNABLE LUMINESCENCE; GREEN; EU3+; EMISSION; IONS; BAND; CL;
D O I：
10.1007/s10854-019-02061-x
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
Novel color-tunable Ca-5(PO4)(3)Br:Eu2+,Mn2+ single component phosphors have been firstly synthesized through high-temperature solid-state reaction. X-ray diffraction (XRD), scanning electron microscopy (SEM), decay curves, and photoluminescence (PL) including temperature-dependent PL properties were used to characterize the as-prepared samples. Ca-5(PO4)(3)Br:Eu2+ phosphors can be efficiently excited in the range of 250-450 nm, and give intense blue emission centering at 461 nm. A tunable color from blue to white and then to red was generated when Mn2+ ions were co-doped into the Ca-5(PO4)(3)Br:Eu2+, which is based on the energy transfer from Eu2+ to Mn2+ ions. The energy transfer is demonstrated to be a dipole-quadrupole mechanism. The temperature dependent luminescence properties of Ca-5(PO4)(3)Br:Eu2+ and Ca-5(PO4)(3)Br:Eu2+,Mn2+ phosphors have been studied in detail. Furthermore, the fabricated white LED showed the chromaticity coordinate (0.314, 0.285), color rendering index of 83, and correlated color temperature of 6248 K. All phenomena demonstrate that Ca-5(PO4)(3)Br:Eu2+,Mn2+ is a very promising candidate for use as UV white light-emitting diode (WLED) phosphor.
引用
收藏
页码：17145 / 17154
页数：10
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