Synthesis and luminescence properties of a novel double-perovskite Ca2ScTaO6:Mn4+ far-red phosphor used for plant growth lighting

被引:30
作者
Liao, Jinsheng [1 ,2 ]
Wang, Minghua [1 ]
Gong, Guoliang [1 ]
Sun, Yijian [1 ]
Huang, Haiping [1 ]
Wen, He-Rui [1 ]
Tu, Chaoyang [1 ]
机构
[1] Jiangxi Univ Sci & Technol, Sch Chem & Chem Engn, Ganzhou 341000, Peoples R China
[2] Guo Rui Sci Innovat Rare Earth Funct Mat Co Ltd, Baotou 014030, Peoples R China
基金
中国国家自然科学基金;
关键词
Far-red phosphor; Mn4+; Luminescence; Plants growing lighting; PHOTOLUMINESCENCE PROPERTIES; EMITTING PHOSPHOR; HIGHLY EFFICIENT; ENERGY-TRANSFER; SITE OCCUPANCY; MN4+; EMISSION; ENHANCEMENT; CONVERTER; MECHANISM;
D O I
10.1016/j.optmat.2020.110274
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
In this paper, a novel far-red tantalate phosphor Ca2ScTaO6:Mn4+ has been prepared by a high temperature solid state method. Upon 348 nm excitation, Ca2ScTaO6:Mn4+ phosphor showed a high-purity far-red emission at approximately 692 nm and Ca2ScTaO6: 0.4%Mn4+ with strongest luminescence performance was used as the optimum doping concentration. The concentration quenching process of Mn4+ in the Ca2ScTaO6 host is mainly due to quadrupole-quadrupole interactions. In addition, the activation energy (0.3686 eV) for the Ca2ScTaO6:Mn4+ phosphor can be obtained according to the temperature-dependence luminescence spectra. Finally, Ca2ScTaO6: 0.4%Mn4+ phosphor and a 365 nm light emitting diode (LED) chip are used to fabricate the LED device. The excellent luminescent properties of Ca2ScTaO6:Mn4+ suggest that this material could be a promising far-red phosphor for plants growing lighting.
引用
收藏
页数:8
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