Luminescence characteristics of Bi3+/Tb3+/Mn2+-doped Sr3Y2Ge3O12 phosphors

被引：15
|
作者：
Ren, Yuchun [1 ]
Zhang, Honghui [2 ]
Chen, Yuanyuan [2 ]
Li, Nana [2 ]
Yang, Yuguo [3 ]
机构：
[1] Leshan Ecol Environm Monitoring Ctr Sichuan Prov, Leshan 614000, Peoples R China
[2] Zhoukou Normal Univ, Sch Phys & Telecommun Engn, Zhoukou 466001, Peoples R China
[3] Qilu Univ Technol, Shandong Acad Sci, Adv Mat Inst, Jinan 250014, Peoples R China
来源：
CERAMICS INTERNATIONAL | 2022年 / 48卷 / 04期
关键词：
Sr3Y2Ge3O12; Bi3+; Tb3+; Mn2+ doping; Tunable luminescence; Energy transfer; ENERGY-TRANSFER; THERMAL-STABILITY; RED; CE3+; MN2+; PHOTOLUMINESCENCE; BLUE; UV;
D O I：
10.1016/j.ceramint.2021.11.120
中图分类号：
TQ174 [陶瓷工业]; TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
Bi3+/Tb3+/Mn2+-doped Sr3Y2Ge3O12 phosphors were synthesized, and their luminescence performance was investigated. Upon excitation with UV/NUV, the Sr3Y2Ge3O12:Bi3+, Sr3Y2Ge3O12:Tb3+ and Sr3Y2Ge3O12:Mn2+ phosphors showed prominent cyan, green and red emissions, respectively. Energy transfer processes occur in Bi3+/Tb3+, Bi3+/Mn2+ and Bi3+/Tb3+/Mn2+-codoped Sr3Y2Ge3O12 phosphors, which leads to tunable luminescence. The calculated CIE coordinates on the basis of the emission spectra indicate that the tunability of the luminescence for the Bi3+/Tb3+-codoped Sr3Y2Ge3O12 phosphors is not conspicuous. Their light is mainly located in the cyan light region. However, for the Bi3+/Mn2+-codoped Sr3Y2Ge3O12 phosphors with a fixed Bi3+ concentration of 2 mol% and changing Mn2+ concentration, the emission shifts from the blue light region to the near white light region. After the doping of the Tb3+ ions in the Sr3Y2Ge3O12:2%Bi3+/5%Mn2+ phosphors, white light is generated. The CCTs of the light of the Bi3+/Tb3+/Mn2+-codoped Sr3Y2Ge3O12 phosphors decreased continuously with increasing Tb3+ concentration. Warm white light is generated by the Sr3Y2Ge3O12:2%Bi3+/5%Tb3+/ 5%Mn2+ phosphor.
引用
收藏
页码：5737 / 5743
页数：7
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