Novel Orange-red-emitting Sr3Ga2Ge4O14:Sm3+ Phosphors with Low Thermal Quenching

被引：0
|
作者：
Yang W.-B. [1 ,2 ]
Xiong F.-B. [1 ,2 ]
Yang Y. [1 ]
Zhou Q. [1 ]
Xie L.-C. [1 ]
Ling S. [1 ]
Luo X. [1 ]
机构：
[1] School of Optoelectronics and Communication Engineering, Xiamen University of Technology, Xiamen
[2] Fujian Key Laboratory of Optoelectronic Technology and Devices, Xiamen University of Technology, Xiamen
来源：
Faguang Xuebao/Chinese Journal of Luminescence | 2022年 / 43卷 / 06期
关键词：
charge compensator; photoluminescence; Sm[!sup]3+[!/sup; Sr[!sub]3[!/sub]Ga[!sub]2[!/sub]Ge[!sub]4[!/sub]O[!sub]14[!/sub; white light emitting diode（WLED）;
D O I：
10.37188/CJL.20220055
中图分类号：
学科分类号：
摘要：
A series of Sr3-xGa2Ge4O14∶xSm3+（x=0-0.20）and Sr2.88Ga2Ge4O14∶0.06Sm3+，0.06M（M= Li+， Na+， K+）phosphors were prepared via the high temperature solid-state reaction. The phase structure， crystal morphology， fluorescent spectra， temperature-dependent spectra， and CIE chromaticity coordinates of the samples were investigated. The optimal doping concentration in Sr3-xGa2Ge4O14∶xSm3+ was x=0.06， and the concentration quenching could be ascribed to the dipole-dipole interaction between Sm3+ions. The luminescent emission intensities of Sr3-xGa2Ge4O14∶xSm3+ were greatly enhanced by co-doped M（M=Li+， Na+， K+）ions as charge compensator. The fluorescent decay lifetime became shorter when increasing Sm3+ concentration. The CIE chromaticity coordinates and thermal stability properties of Sr3-xGa2Ge4O14∶xSm3+were discussed. The CIE chromaticity coordinates of Sr3-xGa2Ge4O14∶xSm3+ were located within the orange-red spectral region and the luminescent emission intensities could remain 95% of that at room temperature. All these results indicated that Sr3-xGa2Ge4O14∶xSm3+could be a potential candidate as a novel orange-red emitting component applied in white light emitting diode（WLED）. © 2022 Chines Academy of Sciences. All rights reserved.
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页码：879 / 890
页数：11
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