Efficient broadband near-infrared phosphor Sr2ScSbO6:Cr3+ for solar-like lighting

被引:111
|
作者
Zhao, Meng [1 ]
Liu, Shengqiang [1 ]
Cai, Hao [1 ]
Zhao, Fangyi [1 ]
Song, Zhen [1 ]
Liu, Quanlin [1 ]
机构
[1] Univ Sci & Technol Beijing, Sch Mat Sci & Engn, Beijing Municipal Key Lab New Energy Mat & Techno, Beijing 100083, Peoples R China
基金
中国国家自然科学基金;
关键词
broadband near-infrared; double-perovskite; Sr2ScSbO6:Cr3+; pc-LEDs; solar-like spectrum; SIMULATOR;
D O I
10.1007/s40843-021-1785-6
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
For healthy lighting, daily lighting that considers both visible light and near-infrared (NIR) light is necessary. However, at similar to 900 nm, the extensively used solar-like phosphor-converted light-emitting diodes (pc-LEDs) are limited by a lack of high-performance NIR luminescent materials. We report a broadband NIR phosphor Sr2ScSbO6:Cr3+ with a double perovskite-type structure, thus simultaneously demonstrating high luminescence efficiency and good thermal stability. Under 550-nm excitation, Sr2ScSbO6:Cr3+ demonstrates broadband NIR emission centered at similar to 890 nm with luminescence internal/external efficiencies of 82.0%/35.7%, respectively. Furthermore, the luminescence integrated intensity at 430 K remains at similar to 66.4% of the initial intensity. We successfully fabricated pc-LED devices using a 465-nm-sized blue chip and other commercial phosphors, presenting a relatively complete solar-like spectrum from blue to NIR light and is expected to be used in solar-like lighting.
引用
收藏
页码:748 / 756
页数:9
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