Simultaneous Broadening and Enhancement of Cr3+ Photoluminescence in LiIn2 SbO6 by Chemical Unit Cosubstitution: Night-Vision and Near-Infrared Spectroscopy Detection Applications

Dongjie Liu; Guogang Li; Peipei Dang; Qianqian Zhang; Yi Wei; Hongzhou Lian; Mengmeng Shang; Chun Che Lin; Jun Lin

doi:10.1002/anie.202103612

Simultaneous Broadening and Enhancement of Cr³⁺ Photoluminescence in LiIn₂ SbO₆ by Chemical Unit Cosubstitution: Night-Vision and Near-Infrared Spectroscopy Detection Applications

Angew Chem Int Ed Engl. 2021 Jun 21;60(26):14644-14649. doi: 10.1002/anie.202103612. Epub 2021 May 19.

Authors

Dongjie Liu^{1

2}, Guogang Li³, Peipei Dang^{1

2}, Qianqian Zhang^{1

2}, Yi Wei³, Hongzhou Lian¹, Mengmeng Shang⁴, Chun Che Lin^{5

6}, Jun Lin^{1

2}

Affiliations

¹ State Key Laboratory of Rare Earth Resource Utilization, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, 5625 Renmin Street, Changchun, 130022, China.
² School of Applied Chemistry and Engineering, University of Science and Technology of China, Hefei, 230026, China.
³ Faculty of Materials Science and Chemistry, China University of Geosciences, Wuhan, 430074, China.
⁴ School of Material Science and Engineering, Shandong University, Jinan, 266071, China.
⁵ Institute of Organic and Polymeric Materials, National Taipei University of Technology, Taipei, 106, Taiwan.
⁶ Research and Development Center for Smart Textile Technology, National Taipei University of Technology, Taipei, 106, Taiwan.

PMID: 33825295
DOI: 10.1002/anie.202103612

Abstract

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 LiIn₂ SbO₆ :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 ⁴ T_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.

Keywords: NIR spectroscopy; chemical unit cosubstitution; near-infrared emitting phosphor; night-vision; photoluminescence tuning.

Abstract

Grants and funding