Synthesis and warm white emission performance of single-component Ca7Mg2(PO4)6:Dy3+, Eu3+phosphor for white light-emitting diodes

被引:8
作者
Chen, Lisen [1 ]
Zhang, Wentao [1 ]
Zhu, Haiwen [1 ]
Li, Junfeng [1 ]
Li, Qiang [2 ]
Zhao, Wenming [2 ]
Yang, Yibai [2 ]
Li, Dongsheng [2 ]
机构
[1] Chengdu Univ Technol, Coll Mat & Chem & Chem Engn, State Key Lab Geo Hazard Prevent & Geo Environm Pr, Chengdu 610059, Peoples R China
[2] Sichuan Huati Lighting Technol Co Ltd, Chengdu 610207, Peoples R China
关键词
Sol -gel method; Photoluminescence; White; -emitting; Energy transfer; w-LEDs; Ca7Mg2(PO4)6; LUMINESCENCE PROPERTIES; ENERGY-TRANSFER; PHOSPHOR; EU3+; PHOTOLUMINESCENCE; GENERATION; CRYSTAL; DY3+; EU2+;
D O I
10.1016/j.ceramint.2023.12.072
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
A single -component Ca7Mg2(PO4)6:Dy3+, Eu3+ white -emitting phosphor was synthesized by a sol-gel approach. The effects of the amounts of Dy3+ ions and Eu3+ ions on the luminescence characteristics and crystal structure of Ca7Mg2(PO4)6:Dy3+, Eu3+ were systematically investigated. The Ca7Mg2(PO4)6:Dy3+, Eu3+ phosphors had a Ca7Mg2(PO4)6 structure with an R3c (161) space group. The Ca7Mg2(PO4)6:Dy3+ phosphor showed emission peaks at both 484 nm (blue) and 576 nm (yellow), which led to the realization of white light. Furthermore, after codoping Eu3+ ions into the structure, a red emission peak (-617 nm) appeared in the spectrum as a supplementary red component. A warm white light with a low correlated colour temperature (CCT) is obtained from Dy3+/Eu3+-codoped Ca7Mg2(PO4)6. The luminescence intensity at 483 K still reaches more than 73 % of that at 303 K. The packaged LEDs display a bright warm white light with CCT value and colour rendering index (CRI) of 3878 K and 86.7, respectively, which is comfortable for the human eye. With excellent luminescence performances, the white -emitting Ca7Mg2(PO4)6:Dy3+, Eu3+ phosphor had a significant application potential in the wLED field.
引用
收藏
页码:7101 / 7109
页数:9
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