NUV-pumped luminescence of thermally stable samarium-activated alkali metal borophosphate phosphor  

作　　者：Zhenyu FANG Dan YANG Youkui ZHENG Jialiang SONG Tongsheng YANG Ruitong SONG Yuefei XIANG Jing ZHU 

机构地区：[1]Key Laboratory of LCR Materials and Devices of Yunnan Province,National Center for International Research on Photoelectric and Energy Materials,School of Materials and Energy,Yunnan University,Kunming 650091,China

出　　处：《Journal of Advanced Ceramics》2021年第5期1072-1081,共10页先进陶瓷（英文）

基　　金：financially supported by the National Natural Science Foundation of China(Nos.21761034 and 22165031);the Open Foundation of Key Laboratory for Micro/Nano Materials&Technology of Yunnan Province(No.2021KF01);the Program for Excellent Young Talents,Yunnan University.

摘　　要：Exploring outstanding rare-earth activated inorganic phosphors with good thermostability has always been a research focus for high-power white light-emitting diodes(LEDs).In this study,we report a Sm^(3+)-activated KNa_(4)B_(2)P_(3)O_(13)(KNBP)powder phase.Its particle morphology,photoluminescence properties,concentration quenching mechanism,thermal quenching mechanism,and chromatic properties are demonstrated.Upon the near-ultraviolet(NUV)irradiation of 402 nm,the powder phase exhibits orange-red visible luminescence performance,originating from typical ^(4)G_(5/2)→^(6)H_(J/2)(J=5,7,9)transitions of Sm^(3+).Importantly,the photoluminescence performance has good thermostability,low correlated color temperature(CCT),and high color purity(CP),indicating its promising application in the NUV-pumped warm white LEDs.

关 键 词：KNa_(4)B_(2)P_(3)O_(13)(KNBP) Sm^(3+)luminescence concentration quenching thermostability 

分 类 号：TN312.8[电子电信—物理电子学] TQ422[化学工程]