Simultaneous Broadening and Enhancement of Cr3+ Photoluminescence in LiIn2SbO6 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

Research output: Contribution to journalArticlepeer-review

2 Citations (Scopus)

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 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 4T2g 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.

Original languageEnglish
Pages (from-to)14644-14649
Number of pages6
JournalAngewandte Chemie - International Edition
Volume60
Issue number26
DOIs
Publication statusPublished - Jun 21 2021
Externally publishedYes

Keywords

  • chemical unit cosubstitution
  • near-infrared emitting phosphor
  • night-vision
  • NIR spectroscopy
  • photoluminescence tuning

ASJC Scopus subject areas

  • Catalysis
  • Chemistry(all)

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