Luminescent characteristics of Tm^(3+)/Tb^(3+)/Eu^(3+) tri-doped Na_(5)Y_(9)F_(32) single crystals for white emission with high thermal stability  

作　　者：Lizhi Fang Xiong Zhou Zhiwei Zhao Biao Zheng Haiping Xia Jun Wang Hongwei Song Baojiu Chen 方立志;周雄;赵志伟;郑标;夏海平;王军;宋宏伟;陈宝玖(Key Laboratory of Photo-electronic Materials,Ningbo University,Ningbo 315211,China;Taizhou Special Equipment Inspection and Research Institute,Taizhou 318000,China;Fujian Provincial Key Laboratory of Functional Marine Sensing Materials,Center for Advanced Marine Sensing Materials and Smart Sensors,Minjiang University,Fuzhou 350108,China;State Key Laboratory on Integrated Optoelectronics,College of Electronic Science and Engineering and College of Physics,Jilin University,Changchun 130012,China;Department of Physics,Dalian Maritime University,Dalian 116026,China)

机构地区：[1]Key Laboratory of Photo-electronic Materials,Ningbo University,Ningbo 315211,China [2]Taizhou Special Equipment Inspection and Research Institute,Taizhou 318000,China [3]Fujian Provincial Key Laboratory of Functional Marine Sensing Materials,Center for Advanced Marine Sensing Materials and Smart Sensors,Minjiang University,Fuzhou 350108,China [4]State Key Laboratory on Integrated Optoelectronics,College of Electronic Science and Engineering and College of Physics,Jilin University,Changchun 130012,China [5]Department of Physics,Dalian Maritime University,Dalian 116026,China

出　　处：《Chinese Physics B》2022年第12期544-549,共6页中国物理B（英文版）

基　　金：Project supported by the National Natural Science Foundation of China(Grant No.62275133);the Natural Science Foundation of Zhejiang Province of China(Grant No.LY22E020002);the Natural Science Foundation of Ningbo(Grant Nos.2021J077 and 202003N4099);K.C.Wong Magna Fund in Ningbo University

摘　　要：By using an improved Bridgman method,0.3 mol%Tm^(3+)/0.6 mol%Tb^(3+)/y mol%Eu^(3+)(y=0,0.4,0.6,0.8)doped Na_(5)Y_(9)F_(32)single crystals were prepared.The x-ray diffraction,excitation spectra,emission spectra and fluorescence decay curves were used to explore the crystal structure and optical performance of the obtained samples.When excited by 362 nm light,the cool white emission was realized by Na_(5)Y_(9)F_(32)single crystal triply-doped with 0.3 mol%Tm^(3+)/0.6 mol%Tb^(3+)/0.8 mol%Eu^(3+),in which the Commission Internationale de l’Eclairage(CIE)chromaticity coordinate was(0.2995,0.3298)and the correlated color temperature(CCT)was 6586 K.The integrated normalized emission intensity of the tridoped single crystal at 448 K could keep 62%of that at 298 K.The internal quantum yield(QY)was calculated to be~15.16%by integrating spheres.These results suggested that the single crystals tri-doped with Tm^(3+),Tb^(3+)and Eu^(3+)ions have a promising potential application for white light-emitting diodes(w-LEDs).

关 键 词：Tm^(3+)/Tb^(3+)/Eu^(3+)triply-doped Na_(5)Y_(9)F_(32) white light emission energy transfer process thermal stability 

分 类 号：TN312.8[电子电信—物理电子学] O734[理学—晶体学]