Microwave-assisted fast synthesis and red-emitting properties of a borotellurate-based phosphor with excellent thermostability  

作　　者：Yuefei Xiang Hong Li Hongzhi Zhang Lin Yang Canyuan Liao Tongsheng Yang Junpeng Li Zewen Guo Jing Zhu 

机构地区：[1]Key Laboratory of LCR Materials and Devices of Yunnan Province,Yunnan Key Laboratory of Carbon Neutrality and Green Low-carbon Technologies,School of Materials and Energy Yunnan University,Kunming,650091,China

出　　处：《Journal of Rare Earths》2024年第6期1036-1045,I0002,共11页稀土学报（英文版）

基　　金：Project supported by the National Natural Science Foundation of China(22165031,21761034);NationalUndergraduate Innovation and Entrepreneurship Foundation(202210673034);Scientific Research Foundation of Education Departmentof Yunnan province(2022Y001)。

摘　　要：At present,with the increasing application needs of phosphor-converted white light-emitting diode(wLED),the synthetic efficiency and thermal stability of phosphor become urgent problems.Herein,this research reports a microwave-assisted fast synthesis approach to obtain a Sm^(3+)-activated borotellurate Na_(2)Y_(2)TeO_(4)(BO_(3))_(2)(NYTB)red phosphor with high crystallinity,excellent thermostability,and low chromaticity shift.For the NYTB-based phosphor,in contrast to the conventional solid-state synthesis,the microwave-assisted synthesis method involves lower synthesis temperature and shorter processing time.Additionally,the concentration quenching mechanism was determined.The w-LED device packaged with the studied phosphor exhibits a near-standard white light with proper CCT and high Ra parameters.

关 键 词：Borotellurate SAMARIUM Microwave-assisted synthesis Red-emitting Thermal stability RAREEARTHS 

分 类 号：TQ422[化学工程]