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

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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.
出处 《Journal of Rare Earths》 SCIE EI CAS CSCD 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)。
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