A novel broadband near-infrared phosphor NaBaScSi2O7: Fe3+ and its application in pc-LED and night vision

IF 6.8 2区材料科学 Q1 MATERIALS SCIENCE, MULTIDISCIPLINARY

Science China Materials Pub Date : 2025-03-03 DOI:10.1007/s40843-024-3234-0

Changshuai Gong (, ), Ziying Wang (, ), Jiantong Wang (, ), Xuyan Xue (, ), Xuejiao Wang (, )

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引用次数: 0

Abstract

In recent years, Fe³⁺-doped near-infrared (NIR) phosphors have garnered significant attention, primarily due to their non-toxic nature, long emission wavelength, and excellent thermal stability. In this work, a series of NaBaScSi₂O₇: xFe³⁺ (x = 0.01–0.07) phosphors were synthesized by the conventional solid-state reaction method. The impact of Fe³⁺ doping on the bandgap of NaBaScSi₂O₇ was analyzed by diffuse reflectance spectroscopy (DRS) and first-principles calculations. Under excitation at 301 nm, the series of phosphors emitted broadband NIR luminescence at 815 nm with full width at half maximum (FWHM) of 116 nm. Varying-temperature testing of the NaBaScSi₂O₇: 0.03Fe³⁺ phosphor indicated that it can retain 46% of its room temperature luminescence intensity at 423 K. This excellent thermal stability is attributed to the small Huang-Rhys factor (S), which results in weak electron-phonon coupling. In addition, the NIR phosphor-converted light-emitting diode (NIR pc-LED) integrated from the NaBaScSi₂O₇: 0.03Fe³⁺ optimal phosphor and a 310 nm ultraviolet (UV) chip showed a superior night vision capability.

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来源期刊

Science China Materials Materials Science-General Materials Science

CiteScore

11.40

自引率

7.40%

发文量

949

期刊介绍： Science China Materials (SCM) is a globally peer-reviewed journal that covers all facets of materials science. It is supervised by the Chinese Academy of Sciences and co-sponsored by the Chinese Academy of Sciences and the National Natural Science Foundation of China. The journal is jointly published monthly in both printed and electronic forms by Science China Press and Springer. The aim of SCM is to encourage communication of high-quality, innovative research results at the cutting-edge interface of materials science with chemistry, physics, biology, and engineering. It focuses on breakthroughs from around the world and aims to become a world-leading academic journal for materials science.