Luminescent properties of novel red-emitting phosphor Na3TaF8 with non-equivalent doping of Mn4+ for LED backlighting
Luminescent properties of novel red-emitting phosphor Na3TaF8 with non-equivalent doping of Mn4+ for LED backlighting
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LED背光源非等量掺杂Mn4新型红光荧光粉Na3TaF8的发光性能
DOI:
10.1016/j.jlumin.2017.07.064
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发表时间:
2017-12
影响因子:
3.6
通讯作者:
Hongbin Liang
中科院分区:
文献类型:
--
作者:
Zhengliang Wang;Nan Wang;Zhiyu Yang;Zhaofeng Yang;Qianwen Wei;Qiang Zhou;Hongbin Liang
Herein, a new red-emitting phosphor, Na3TaF8:Mn4+, was synthesized by non-equivalent doping of Mn4+under mild condition. Its crystal structure and morphology were characterized by the powder X-ray diffraction (XRD), scanning electron microscopy (SEM). This sample is of single phase with monoclinic crystal structure. Mn4+might occupy the site of Ta5+in Na3TaF8, being located at the center of uniquely tetragonal anti-prism coordinated by eight F-. The as-prepared Na3TaF8:Mn4+has sharp red emissions with higher color purity under the blue light excitation. The luminescent behavior of Mn4+in such host is similar with that in some hexafluorides with disordered octahedral structure. Intense red light can be observed from the single red LED based on Na3TaF8:Mn4+. These results show this phosphor to be a potentially red component for LED backlighting.
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