TY - JOUR
T1 - Simultaneous Broadening and Enhancement of Cr3+ Photoluminescence in LiIn2SbO6 by Chemical Unit Cosubstitution
T2 - Night-Vision and Near-Infrared Spectroscopy Detection Applications
AU - Liu, Dongjie
AU - Li, Guogang
AU - Dang, Peipei
AU - Zhang, Qianqian
AU - Wei, Yi
AU - Lian, Hongzhou
AU - Shang, Mengmeng
AU - Lin, Chun Che
AU - Lin, Jun
N1 - Funding Information:
This work was financially supported by the Science and Technology Cooperation Project between Chinese and Australian Governments (2017YFE0132300), and the National Natural Science Foundation of China (NSFC No. 51932009, 51720105015, 51929201, 52072349).
Publisher Copyright:
© 2021 Wiley-VCH GmbH
PY - 2021/6/21
Y1 - 2021/6/21
N2 - 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.
AB - 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.
KW - chemical unit cosubstitution
KW - near-infrared emitting phosphor
KW - night-vision
KW - NIR spectroscopy
KW - photoluminescence tuning
UR - http://www.scopus.com/inward/record.url?scp=85106292724&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=85106292724&partnerID=8YFLogxK
U2 - 10.1002/anie.202103612
DO - 10.1002/anie.202103612
M3 - Article
C2 - 33825295
AN - SCOPUS:85106292724
SN - 1433-7851
VL - 60
SP - 14644
EP - 14649
JO - Angewandte Chemie - International Edition
JF - Angewandte Chemie - International Edition
IS - 26
ER -