Synthesis and Photoluminescence Properties of Lu2O3:Dy and Lu2O2S:Dy Phosphors

被引：0
|
作者：
Xu X. [1 ]
Chen H. [1 ,2 ]
Ren G. [3 ]
Bin L. [1 ,2 ]
机构：
[1] School of Materials Science and Chemical Engineering, Ningbo University, Ningbo
[2] Key Laboratory of Photoelectric Detection Materials and Devices of Zhejiang Province, Ningbo
[3] Faculty of Maritime and Transportation, Ningbo University, Ningbo
来源：
Zhongguo Xitu Xuebao/Journal of the Chinese Rare Earth Society | 2021年 / 39卷 / 05期
关键词：
Dy[!sup]3+[!/sup] doping; Lu[!sub]2[!/sub]O[!sub]2[!/sub]S; Lu[!sub]2[!/sub]O[!sub]3[!/sub; Phosphor; Photoluminescence;
D O I：
10.11785/S1000-4343.20210506
中图分类号：
学科分类号：
摘要：
An amorphous precipitation precursor was synthesized by a facile co-precipitation method using ammonium hydrogen carbonate as the precipitant and then thermally decomposed into a cubic Lu2O3:Dy phosphor powder with sphere-like morphology in air. Further sulfuration under hydrogen atmosphere resulted in a hexagonal Lu2O2S:Dy phosphor powder with plate-like shape. The Lu2O3:Dy phosphor exhibits yellowish green emissions derived from 4F9/2→6H15/2, 6H13/2 transitions of Dy3+ and the 1931 CIE chromaticity coordinate is (0.34, 0.46), while the Lu2O2S:Dy phosphor shows strong blue, green and yellow emissions, respectively, originated from 4F9/2→ 6H15/2, 6H13/2, 6H11/2, and 4G11/2→6H13/2 transitions and the 1931 CIE chromaticity coordinate is (0.40, 0.43). The optimum contents of Dy3+ in Lu2O3 and Lu2O2S are 0.05% and 1.0%, respectively. The Lu2O2S:Dy phosphor has a much higher emission and excitation intensity, a bigger external quantum efficiency, and a shorter lifetime than the Lu2O3:Dy counterpart. © 2021, Editorial Office of Journal of the Chinese Society of Rare Earths. All right reserved.
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页码：734 / 741
页数：7
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