
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
4.Zhejiang Institute, China University of Geosciences, 311305, Hangzhou, China
5.Laboratory of Crystal Physics, Kirensky Institute of Physics, Federal Research Center KSC SB RAS, Krasnoyarsk, 660036, Russia
6.Institute of Engineering Physics and Radioelectronics, Siberian Federal University, Krasnoyarsk, 660041, Russia
7.Research and Development Department, Kemerovo State University, Kemerovo, 650000, Russia
8.School of Material Science and Engineering, Shandong University, 266071, Jinan, China
Guogang Li (ggli@cug.edu.cn)
Jun Lin (jlin@ciac.ac.cn)
Published:31 May 2022,
Published Online:27 April 2022,
Received:25 February 2022,
Revised:02 April 2022,
Accepted:14 April 2022
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Liu, D. J. et al. Highly efficient Fe3+-doped A2BB′O6 (A = Sr2+, Ca2+; B, B′ = In3+, Sb5+, Sn4+) broadband near-infrared-emitting phosphors for spectroscopic analysis. Light: Science & Applications, 11, 969-978 (2022).
Liu, D. J. et al. Highly efficient Fe3+-doped A2BB′O6 (A = Sr2+, Ca2+; B, B′ = In3+, Sb5+, Sn4+) broadband near-infrared-emitting phosphors for spectroscopic analysis. Light: Science & Applications, 11, 969-978 (2022). DOI: 10.1038/s41377-022-00803-x.
Near-infrared (NIR)-emitting phosphor-converted light-emitting diodes have attracted widespread attention in various applications based on NIR spectroscopy. Except for typical Cr
3+
-activated NIR-emitting phosphors
next-generation Cr
3+
-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 Fe
3+
-activated Sr
2−
y
Ca
y
(InSb)
1−
z
Sn
2
z
O
6
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 Ca
2+
incorporation owing to the substitution-induced lower symmetry of the Fe
3+
sites. The Ca
2
InSbO
6
: Fe
3+
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 Fe
3+
-activated broadband NIR-emitting phosphors and opens up a new avenue for designing NIR-emitting phosphor materials.
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