Site occupation and energy transfer in full color emitting phosphor Ba2Ca(BO3)2:Ce3+(K+),Eu^(2+),Mn2+  

作　　者：Qingsong Hu Zaifa Pan Guijie Liang 

机构地区：[1]Hubei Key Laboratory of Low Dimensional Optoelectronic Materials and Devices,Hubei University of Arts and Science,Xiangyang 441053,China [2]College of Chemical Engineering,Zhejiang University of Technology,Hangzhou 310014,China

出　　处：《Journal of Rare Earths》2022年第11期1691-1698,I0002,共9页稀土学报（英文版）

基　　金：Project supported by the National Key Research and Development Plan of China(2019YFE0107200);the Natural Science Foundation of Hubei Province(2020CFB700);the Doctoral Researchof Hubei University of Arts and Science(kyqdf2020023);Innovation Research Team Project of Hubei University of Arts and Science(2020kypytd001);the Project of Hubei University of Arts and Science(XK2021027);the National Natural Science Foundation of China(10804099);Natural Science Foundation of Zhejiang Province(LZ18B050002)。

摘　　要：White light-emitting diodes(WLEDs)fabricated by single-phase full color emitting phosphor are an emerging solution for health lighting.The crystallographic site occupation of activators in a proper host lattice is crucial for sophisticated design of such phosphor.Here,we report a high quality white lightemitting phosphor Ba_(2)Ca(BO_(3))_(2):Ce^(3+)(K^(+)),Eu^(2+),Mn^(2+)with spectral distribution covering whole visible region.Blue light emission originates from Ce3+ions occupying preferentially Ba^(2+)site by controlling synthesis conditions.Green and red lights are obtained from Eu^(2+)occupying Ba2+(and Ca)site and Mn2+occupying Casite,respectively.In this triple-doped phosphor,strong red emission with a low concentration of Mn2+is realized by the efficient energy transfer from Ce3+and Euto Mn.Furthermore,high quality white light is accomplished by properly tuning the relative doping amount of Ce^(3+)(K^(+))/Eu^(2+)/Mn^(2+)based on efficient simultaneous energy transfer.The results indicate that Ba_(2)Ca(BO_(3))_(2):Ce^(3+)(K^(+)),Eu^(2+),Mn^(2+)is a promising white light-emitting phosphor in WLEDs application.

关 键 词：Single-phase Full color phosphor Site preference occupation Energy transfer Ba2Ca(BO3)2:Ce3+(K+) Eu^(2+) Mn2+ Rare earths 

分 类 号：TB34[一般工业技术—材料科学与工程] TN312.8[电子电信—物理电子学]