Highly efficient Fe3+-doped A2BB'O6 (A = Sr2+, Ca2+; B, B' = In3+, Sb5+, Sn4+) broadband near-infrared-emitting phosphors for spectroscopic analysis

Dongjie Liu; Guogang Li; Peipei Dang; Qianqian Zhang; Yi Wei; Lei Qiu; Maxim S Molokeev; Hongzhou Lian; Mengmeng Shang; Jun Lin

doi:10.1038/s41377-022-00803-x

Highly efficient Fe³⁺-doped A₂BB'O₆ (A = Sr²⁺, Ca²⁺; B, B' = In³⁺, Sb⁵⁺, Sn⁴⁺) broadband near-infrared-emitting phosphors for spectroscopic analysis

Light Sci Appl. 2022 Apr 27;11(1):112. doi: 10.1038/s41377-022-00803-x.

Authors

Dongjie Liu^{1

2}, Guogang Li^{3

4}, Peipei Dang^{1

2}, Qianqian Zhang^{1

2}, Yi Wei⁵, Lei Qiu⁵, Maxim S Molokeev^{6

7

8}, Hongzhou Lian¹, Mengmeng Shang⁹, Jun Lin^{10

11}

Affiliations

¹ State Key Laboratory of Rare Earth Resource Utilization, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, 130022, Changchun, China.
² University of Science and Technology of China, 230026, Hefei, China.
³ Faculty of Materials Science and Chemistry, China University of Geosciences, 430074, Wuhan, China. ggli@cug.edu.cn.
⁴ Zhejiang Institute, China University of Geosciences, 311305, Hangzhou, China. ggli@cug.edu.cn.
⁵ Faculty of Materials Science and Chemistry, China University of Geosciences, 430074, Wuhan, China.
⁶ Laboratory of Crystal Physics, Kirensky Institute of Physics, Federal Research Center KSC SB RAS, Krasnoyarsk, 660036, Russia.
⁷ Institute of Engineering Physics and Radioelectronics, Siberian Federal University, Krasnoyarsk, 660041, Russia.
⁸ Research and Development Department, Kemerovo State University, Kemerovo, 650000, Russia.
⁹ School of Material Science and Engineering, Shandong University, 266071, Jinan, China.
¹⁰ State Key Laboratory of Rare Earth Resource Utilization, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, 130022, Changchun, China. jlin@ciac.ac.cn.
¹¹ University of Science and Technology of China, 230026, Hefei, China. jlin@ciac.ac.cn.

Abstract

Near-infrared (NIR)-emitting phosphor-converted light-emitting diodes have attracted widespread attention in various applications based on NIR spectroscopy. Except for typical Cr³⁺-activated NIR-emitting phosphors, next-generation Cr³⁺-free NIR-emitting phosphors with high efficiency and tunable optical properties are highly desired to enrich the types of NIR luminescent materials for different application fields. Here, we report the Fe³⁺-activated Sr_2-yCa_y(InSb)_1-zSn_2zO₆ phosphors that exhibit unprecedented long-wavelength NIR emission. The overall emission tuning from 885 to 1005 nm with broadened full-width at half maximum from 108 to 146 nm was realized through a crystallographic site engineering strategy. The NIR emission was significantly enhanced after complete Ca²⁺ incorporation owing to the substitution-induced lower symmetry of the Fe³⁺ sites. The Ca₂InSbO₆:Fe³⁺ phosphor peaking at 935 nm showed an ultra-high internal quantum efficiency of 87%. The as-synthesized emission-tunable phosphors demonstrated great potential for NIR spectroscopy detection. This work initiates the development of efficient Fe³⁺-activated broadband NIR-emitting phosphors and opens up a new avenue for designing NIR-emitting phosphor materials.

Abstract

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