发光学报2026，Vol.47Issue(8)：1425-1436,12.DOI:10.37188/CJL.20260100
近红外二区发射荧光粉Li3PO4∶Mn5+的合成与发光性能调控
Synthesis and Luminescence Property Modulation of NIR-Ⅱ Emitting Li3PO4∶Mn5+Phosphor
摘要
Abstract
The second near-infrared(NIR-Ⅱ)photoluminescence exhibits distinct advantages for imaging due to its deeper penetration and superior resolution.Mn5+features ultra-narrow emission in the NIR-Ⅱ region,however,it still remains challenging to fulfill Mn5+emission due to valence state instability.Mn-doped Li3PO4 compounds are syn‑thesized by conventional high-temperature solid-state reaction method,the possible Mn substitution sites are predict‑ed through density functional theory calculation,the influences of sintering temperature(600~700℃)and atmosphere(Air,O2)on Mn5+1 120 nm emission intensity are investigated in detail,and clarified the physical mechanism of O2 benefiting for improving Mn5+emission.Finally,the optimal composition Li3PO4∶0.01Mn5+(650℃+O2)is obtained.NIR pc-LED is fabricated based on the phosphor's good thermal stability(T50=435 K)and its potential application on anti-counterfeit information identification is explored.This work is expected to provide research thoughts on synthe‑sizing and regulating Mn5+-activated luminescent materials through high-temperature solid-state reaction method.关键词
Mn5+/NIR-Ⅱ发光/调控策略/煅烧气氛Key words
Mn5+/NIR-Ⅱ emission/modulation strategies/sintering atmosphere分类
数理科学引用本文复制引用
李雅洁,郭人华,张友明,金正元,景铃胭,宋恩海..近红外二区发射荧光粉Li3PO4∶Mn5+的合成与发光性能调控[J].发光学报,2026,47(8):1425-1436,12.基金项目
深圳信息职业技术大学重点研究领域支持科研项目(SUIT2026KJ014) （SUIT2026KJ014）
深圳市基础研究专项自然科学基金计划项目(JCYJ20250604182808011)Supported by Key Research Area Support Research Project of Shenzhen University of Information Technology(SUIT2026KJ014) （JCYJ20250604182808011）
Shenzhen Basic Research Special Program of the Natural Science Foundation(JCYJ20250604182808011) （JCYJ20250604182808011）
