Abnormal spectral broadening of ordered-structure near-infrared phosphor La2CaHfO6:Cr3+

被引：7
作者：
Zhao, Yulei [1 ,2 ]
Wang, Xudong [1 ,2 ]
Wang, Qihao [1 ,2 ]
Zhou, Tianliang [1 ,2 ]
Chen, Yousan [3 ]
Xu, Jianxing [3 ]
Tang, Xueyuan [1 ,2 ]
Xie, Rong-Jun [1 ,2 ,4 ]
机构：
[1] Fujian Prov Key Lab Surface & Interface Engn Hig, Xiamen 361005, Peoples R China
[2] Xiamen Univ, Xiamen 361005, Peoples R China
[3] Xiamen Leedarson Digital Educ Technol Co Ltd, Xiamen 361015, Peoples R China
[4] Xiamen Univ, State Key Lab Phys Chem Solid Surfaces, Xiamen 361005, Peoples R China
来源：
JOURNAL OF MATERIALS CHEMISTRY C | 2024年 / 12卷 / 28期
基金：
中国国家自然科学基金; 国家重点研发计划;
关键词：
CR3+ IONS; LUMINESCENCE; DISORDER; PHOTOLUMINESCENCE; PERSISTENT; EMISSION;
D O I：
10.1039/d4tc01036a
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Near-infrared (NIR) phosphors play a key role in the preparation of NIR phosphor-converted light-emitting diodes (NIR pc-LEDs) for night vision, sensing and non-destructive detection, but how to search for broadband NIR phosphors still remains a big challenge. In this work, we obtained an abnormal broadband NIR emission in La2CaHfO6:Cr3+ with an ordered structure. It shows an emission maximum of 906 nm and a large full width at half-maximum (FWHM) of 276 nm. An empirical rule for discovering broadband NIR phosphors with double perovskite structures was suggested by considering their structural parameters, which helped to find La2CaSnO6:Cr3+ and LaCa2NbO6:Cr3+ with FWHM values of 280 and 290 nm. This work provides an interesting perspective for developing NIR phosphors with double perovskite structures.
引用
收藏
页码：10532 / 10539
页数：8
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