文献类型：期刊文献

英文题名：Novel Eu3+ doped red phosphor with zero concentration quenching effect for WLEDs and latent fingerprint detection

作者：Wei, Chao Zhang, Jie Ran, Jingyu

第一作者：Wei, Chao

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：472

外文期刊名：JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY A-CHEMISTRY

收录：;WOS:【SCI-EXPANDED(收录号:WOS:001575360400001)】；

基金：This work was supported by Guizhou Provincial Science and Technology Projects [Qiankehe Basic- [2024] Youth 362] , National Natural Science Foundation of China (No. 52268001) , Guizhou Science and Technology Plan Project (Qiankehe Support [2023] Generally 295) , Natural science Research project of the Education Department of Guizhou Province (No. QJJ [2023] 022, No. QJJ [2023] 077) . In addition, we would like to thank Ms. Hou Junyi for her support in grammar revision.

语种：英文

外文关键词：Sr9La2(WO6)(4): Eu3+; Phosphor; LED; Fingerprint detection

摘要：Efficient red phosphors can significantly enhance the performance of phosphor-converted white light-emitting diodes (pc-LEDs). In this study, Sr9La2(WO6)(4): xEu(3+) red phosphors with no observable concentration quenching were synthesized via the conventional solid-state method and systematically characterized. The results indicate that the Eu3+-activated Sr9La2(WO6)(4) phosphors can effectively absorb near-ultraviolet and blue light and emit strong red light, which is consistent with commercial excitation chips. Concentration-dependent photoluminescence (PL) shows that the phosphor exhibits no concentration quenching, suggesting superior emission properties compared to commercial red phosphors and previously reported Eu3+ phosphors. The synthesized phosphors were encapsulated with commercial phosphors to fabricate white LED devices. Optical testing revealed that the LED devices exhibited a high color rendering index (Ra = 93.495) and excellent correlated color temperature (CCT = 4423). Infrared thermal imaging demonstrated good thermal stability and heat dissipation performance of the LED device. In addition, the fluorescent LFP image prepared by Sr9La2(WO6)(4): xEu(3+) phosphor has excellent visualization effect, and can clearly display the characteristics of different levels of fingerprints on different surfaces. The research shows that Sr9La2(WO6)(4): xEu(3+) red phosphor has great application potential in the field of solid state lighting and LFP detection.