隧道照明用BaMg1.072Al9.928O17∶Eu近红外发光材料的光学性能及夜视成像OA
Optical Properties and Night Vision Imaging of BaMg1.072Al9.928O17:Eu Near-infrared Luminescent Materials for Tunnel Lighting
针对隧道照明等领域对高性能近红外(Near-infrared,NIR)光源的迫切需求,成功开发了一种具有优异发光效率与热稳定性的BaMg1.072Al9.928O17∶Eu(BMAO∶Eu)NIR荧光粉,旨在为构建夜视兼容型智能照明系统提供新的材料解决方案.通过高温固相烧结的方式合成的BMAO荧光材料,呈现了780 nm NIR发射,其内量子效率达55.7%.通过引入Eu3+离子、转换烧结气氛和引入电荷补偿剂的方式证实了材料中的NIR发射来源于晶体结构中的氧空位(VÖ)缺陷;展示出缺陷诱导电荷失衡、自还原价态共存、多波段发光与能量传递之间协同的耦合机制.最后,利用 BMAO∶0.03Eu复合 365 nm紫外芯片制备的 NIR荧光转换发光二级管(Phosphor-converted light-emitting diodes,pc-LEDs)呈现出在夜视照明及生物穿透方面的应用潜力.其卓越的光学性能为开发应用于隧道安全照明与夜视成像的下一代发光器件奠定了基础.
This research,in response to the urgent demand for high-performance near-infrared(NIR)light sources in fields such as tunnel lighting,has successfully developed a BaMg1.072Al9.928O17∶Eu(BMAO∶Eu)NIR phosphor with excellent luminous efficiency and thermal stability,aiming to provide a new material solution for the construc-tion of night vision compatible intelligent lighting systems.BaMg1.072Al9.928O17(BMAO)has been synthesized by high-temperature solid-state sintering.The material exhibits a NIR emission at 780 nm with an internal quantum effi-ciency of 55.7%.The NIR emission originated from oxygen vacancy(VÖ)defects is confirmed by introducing Eu3+ions,changing the sintering atmosphere,and introducing charge compensators.The coupling mechanism of defect-induced charge imbalance,coexistence of reduced valence states,multi-band emission,and energy transfer have been demonstrated.Finally,the NIR pc-LEDs fabricated by combining BMAO∶0.03Eu with a 365 nm ultraviolet chip showed application potential in night vision lighting and biological penetration.The synthesis method of this ma-terial provides a reference for guiding the synthesis of fluorescent materials for night vision lighting.
巴怀强;徐旭辉
昆明理工大学 材料科学与工程学院,云南 昆明 650093昆明理工大学 材料科学与工程学院,云南 昆明 650093
数理科学
近红外氧空位电荷补偿隧道照明
near-infraredoxygen vacancycharge compensationtunnel lighting
《发光学报》 2026 (5)
744-754,11
国家自然科学基金(12364044)云南省重大科技专项计划(202402AG050004,202402AB080011,202302AQ370003)云南省应用基础研究杰出青年项目(202401AV070012) Supported by National Natural Science Foundation of China(12364044)Yunnan Major Scientific and Technological Projects(202402AG050004,202402AB080011,202302AQ370003)the Outstanding Youth Project of Yunnan Province Applied Basic Research Project(202401AV070012)
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