高效高稳定Rb_(2)SiF_(6)∶Mn^(4+)红光单晶  

Preparation and Luminescent Properties of Rb_(2)SiF_(6)∶Mn^(4+) Single Crystal for Laser Lighting

作　　者：周亚运 明红 赵逸飞 王媛婧 宋恩海[1] 夏志国 张勤远[1] ZHOU Ya-yun;MING Hong;ZHAO Yi-fei;WANG Yuan-jing;SONG En-hai;XIA Zhi-guo;ZHANG Qin-yuan(State Key Laboratory of Luminescent Materials and Devices, Guangdong Provincial Key Laboratory of Fiber Laser Materials and Applied Techniques, South China University of Technology, Guangzhou 510641, China)

机构地区：[1]华南理工大学发光材料与器件国家重点实验室,广东省光纤激光材料与应用技术重点实验室,光通信材料研究所,广东广州510640

出　　处：《发光学报》2021年第10期1559-1568,共10页Chinese Journal of Luminescence

基　　金：国家自然科学基金(51972117,U1830203);广东省基础研究与应用基础研究基金(2021A1515012415);广州市科技计划项目(202002030098,202102020125);中央高校基本科研业务费专项资金(2020ZYGXZR050)资助项目。

摘　　要：激光照明是下一代大功率固体照明重要的发展方向之一。目前,主流白光激光器件所采用的黄光/绿光陶瓷或晶体的发射光谱中红光组分不足,使得采用这类单一材料的激光照明器件色温偏高、显色指数较低。本文报道了液相法制备的高效率高稳定的Rb_(2)SiF_(6)∶Mn^(4+)(RSFM)红光单晶,该材料具有宽带蓝光吸收(~450 nm)和窄带红光发射(~630 nm)特征,外量子效率达55.8%。利用该材料组装的暖白光激光照明器件在7 W/mm^(2)功率密度激发下,光效达104.3 lm/W、色温为2633 K、显色指数为78.3。研究表明,高性能Mn^(4+)激活氟化物红光单晶有望促进暖白光激光照明应用。Laser lighting is one of the important developing directions in solid-state lighting in the future.At present,the main stream laser lighting devices are fabricated by yellow/green ceramics or crystals,which show high color temperature and low color rendering index due to the insufficient red-light component of a single material.Herein,Rb_(2)SiF_(6)∶Mn^(4+)(RSFM)red-emitting single crystal with high efficiency and high stability was prepared by a simple solution growth method.The RSFM single crystal shows broadband blue light absorption(~450 nm)and narrowband red emission(~630 nm).The external quantum efficiency(EQE)of RSFM crystal is up to 55.8%,showing great potential in laser lighting to improve the color quality.Under the excitation of 7 W/mm^(2),a warm white laser diode device with high luminous efficiency of 104.3 lm/W,correlated color temperature of 2633 K and a color rendering index of 78.3 is presented.The development of high-performance Mn^(4+)-activated fluoride single crystals is expected to provide new insights into the development of highly efficient and stable materials for advanced lighting applications.

关 键 词：Mn^(4+)掺杂 氟化物 红光单晶 激光照明 

分 类 号：O482.31[理学—固体物理]