Near-infrared optical properties of Cs2KScF6:Cr3+ phosphor for high-power light-emitting diodes

Lingxiang Chu; Enbei Yang; Han Ma; Jing Wan; Tao Yang; Yi Qin; Yanqing Ye; Qiang Zhou; Zhengliang Wang

Arabian Journal of Chemistry (Sep 2024)

Near-infrared optical properties of Cs2KScF6:Cr3+ phosphor for high-power light-emitting diodes

Lingxiang Chu,
Enbei Yang,
Han Ma,
Jing Wan,
Tao Yang,
Yi Qin,
Yanqing Ye,
Qiang Zhou,
Zhengliang Wang

Affiliations

Lingxiang Chu: Key Laboratory of Green Chemistry Materials in University of Yunnan Province, Yunnan Key Laboratory of Chiral Functional Substance Research and Application, School of Chemistry and Environment, Yunnan Minzu University, Kunming 650500, PR China
Enbei Yang: Key Laboratory of Green Chemistry Materials in University of Yunnan Province, Yunnan Key Laboratory of Chiral Functional Substance Research and Application, School of Chemistry and Environment, Yunnan Minzu University, Kunming 650500, PR China
Han Ma: Key Laboratory of Green Chemistry Materials in University of Yunnan Province, Yunnan Key Laboratory of Chiral Functional Substance Research and Application, School of Chemistry and Environment, Yunnan Minzu University, Kunming 650500, PR China
Jing Wan: Corresponding authors.; Key Laboratory of Green Chemistry Materials in University of Yunnan Province, Yunnan Key Laboratory of Chiral Functional Substance Research and Application, School of Chemistry and Environment, Yunnan Minzu University, Kunming 650500, PR China
Tao Yang: Key Laboratory of Green Chemistry Materials in University of Yunnan Province, Yunnan Key Laboratory of Chiral Functional Substance Research and Application, School of Chemistry and Environment, Yunnan Minzu University, Kunming 650500, PR China
Yi Qin: Key Laboratory of Green Chemistry Materials in University of Yunnan Province, Yunnan Key Laboratory of Chiral Functional Substance Research and Application, School of Chemistry and Environment, Yunnan Minzu University, Kunming 650500, PR China
Yanqing Ye: Key Laboratory of Green Chemistry Materials in University of Yunnan Province, Yunnan Key Laboratory of Chiral Functional Substance Research and Application, School of Chemistry and Environment, Yunnan Minzu University, Kunming 650500, PR China
Qiang Zhou: Corresponding authors.; Key Laboratory of Green Chemistry Materials in University of Yunnan Province, Yunnan Key Laboratory of Chiral Functional Substance Research and Application, School of Chemistry and Environment, Yunnan Minzu University, Kunming 650500, PR China
Zhengliang Wang: Key Laboratory of Green Chemistry Materials in University of Yunnan Province, Yunnan Key Laboratory of Chiral Functional Substance Research and Application, School of Chemistry and Environment, Yunnan Minzu University, Kunming 650500, PR China

Journal volume & issue: Vol. 17, no. 9
p. 105921

Abstract

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The recent years have witnessed a great leap for near-infrared (NIR) spectroscopy technology in multifunctional application fields. In this study, a double-perovskite structured Cr3+-doped Cs2KScF6 fluoride NIR phosphor with peak location at 778 nm and full-width at half maximum (FWHM) of 95 nm was synthesized by a co-precipitation method. The integral emission intensity at 423 K retains 70 % of that at room temperature (RT), showing good luminescent thermal stability. Combining the obtained phosphor in an NIR phosphor converted light-emitting diode (NIR pc-LED) device, the output power and photoelectric conversion efficiency can reach 72.28 mW and 6.83 % at 320 mA. By virtue of the good optical performance, clear structural images of different fruits were visualized by using the NIR pc-LED as light source, suggesting the potential of Cs2KScF6:Cr3+ phosphor to be used in high-power LED devices.

Published in Arabian Journal of Chemistry

ISSN: 1878-5352 (Print)
Publisher: Elsevier
Country of publisher: Netherlands
LCC subjects: Science: Chemistry
Website: http://www.journals.elsevier.com/arabian-journal-of-chemistry/

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