Simultaneous Broadening and Enhancement of Cr3+ Photoluminescence in LiIn2SbO6 by Chemical Unit Cosubstitution: Night-Vision and Near-Infrared Spectroscopy Detection Applications

被引:221
作者
Liu, Dongjie [1 ,3 ]
Li, Guogang [2 ]
Dang, Peipei [1 ,3 ]
Zhang, Qianqian [1 ,3 ]
Wei, Yi [2 ]
Lian, Hongzhou [1 ]
Shang, Mengmeng [4 ]
Lin, Chun Che [5 ,6 ]
Lin, Jun [1 ,3 ]
机构
[1] Chinese Acad Sci, State Key Lab Rare Earth Resource Utilizat, Changchun Inst Appl Chem, 5625 Renmin St, Changchun 130022, Peoples R China
[2] China Univ Geosci, Fac Mat Sci & Chem, Wuhan 430074, Peoples R China
[3] Univ Sci & Technol China, Sch Appl Chem & Engn, Hefei 230026, Peoples R China
[4] Shandong Univ, Sch Mat Sci & Engn, Jinan 266071, Peoples R China
[5] Natl Taipei Univ Technol, Inst Organ & Polymer Mat, Taipei 106, Taiwan
[6] Natl Taipei Univ Technol, Res & Dev Ctr Smart Text Technol, Taipei 106, Taiwan
基金
中国国家自然科学基金;
关键词
chemical unit cosubstitution; near-infrared emitting phosphor; night-vision; NIR spectroscopy; photoluminescence tuning; CRYSTAL-FIELD MODULATION; SOLID-SOLUTION COMPOUNDS; LIGHT-EMITTING-DIODES; HIGHLY EFFICIENT; SITE SELECTION; PHOSPHOR; EMISSION; LUMINESCENCE;
D O I
10.1002/anie.202103612
中图分类号
O6 [化学];
学科分类号
0703 ;
摘要
Near-infrared (NIR)-emitting phosphor materials have been extensively developed for optoelectronic and biomedical applications. Although Cr3+-activated phosphors have been widely reported, it is challenging to achieve ultra-broad and tunable NIR emission. Here, a new ultra-broadband NIR-emitting LiIn2SbO6:Cr3+ phosphor with emission peak at 965 nm and a full-width at half maximum of 217 nm is reported. Controllable emission tuning from 965 to 892 nm is achieved by chemical unit cosubstitution of [Zn2+-Zn2+] for [Li+-In3+], which can be ascribed to the upshift of T-4(2g) energy level due to the strengthened crystal field. Moreover, the emission is greatly enhanced, and the FWHM reaches 235 nm. The as-prepared luminescent tunable NIR-emitting phosphors have demonstrated the potential in night-vision and NIR spectroscopy techniques. This work proves the feasibility of chemical unit cosubstitution strategy in emission tuning of Cr3+-doped phosphors, which can stimulate further studies on the emission-tunable NIR-emitting phosphor materials.
引用
收藏
页码:14644 / 14649
页数:6
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