文献类型：期刊文献

英文题名：Green Fe3+-activated near-infrared phosphor: energy transfer-driven luminescence enhancement and multifunctional applications

作者：Wei, Chao Zhang, Jie Ran, Jingyu

第一作者：Wei, Chao;韦超

通信作者：Ran, JY[1]

机构：[1]Guizhou Inst Technol, Guizhou Phosphogypsum Inst, Guiyang 550025, Peoples R China;[2]Guizhou Inst Technol, Sch Chem Engn, Guiyang 550025, Peoples R China;[3]Guizhou Prov Higher Educ Inst, Key Lab Chem Admixture Sci & Technol, Guiyang 550003, Peoples R China

第一机构：贵州理工学院

通信机构：corresponding author), Guizhou Inst Technol, Guizhou Phosphogypsum Inst, Guiyang 550025, Peoples R China.|贵州理工学院;

年份：2026

卷号：363

外文期刊名：SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY

收录：;EI(收录号：20263021146236);Scopus(收录号：2-s2.0-105044895463);WOS:【SCI-EXPANDED(收录号:WOS:001830012700001)】；

基金：This work was supported by Guizhou Provincial Science and Technology Projects [Qiankehe foundation- [2024] Youth 362], the National Natural Science Foundation of China (No. 52268001) . Additionally, we would also like to thank Ms. Nanlu Zhang from the University of Washington for her grammatical revisions to the manuscript.

语种：英文

外文关键词：Phosphors; Broadband emission; Energy transfer

摘要：Near-infrared (NIR) phosphor-converted light-emitting diodes have been widely applied in biomedical imaging, night-vision security surveillance, and nondestructive inspection. Owing to its natural abundance, low cost, and environmental benignity, Fe3+ is regarded as a promising activator for the development of broadband NIR phosphors. However, related studies remain relatively limited. In this study, an Fe3+-activated Sr2Sc2B4O11 phosphor is successfully synthesized. Under excitation at 353 nm, the phosphor exhibits broadband NIR emission covering the range of 800-1400 nm, with an emission peak centered at approximately 956 nm, a full width at half maximum (FWHM) of 183 nm, and an internal quantum efficiency of 34%. Furthermore, Yb3+ co-doping is introduced to construct an energy transfer system to enhance the optical performance. The energy transfer interaction between Yb3+ and Fe3+ not only significantly improves the thermal stability but also increases the internal quantum efficiency to 75.5%. In addition, NIR pc-LED devices fabricated using the Sr2Sc2B4O11: Fe3+ phosphor demonstrate promising application potential in venous imaging, night-vision security surveillance, information encryption, and nondestructive inspection.