Luminescent properties of DY~(3+) or/and Tm~(3+) co-doped in La_3PO_7 for white LEDs

Jiyou Wang; Jianbo Wang; Ping Duan

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Luminescent properties of DY~(3+) or/and Tm~(3+) co-doped in La_3PO_7 for white LEDs

机译：La_3PO_7中共掺杂的DY〜（3+）或/和Tm〜（3+）的发光特性

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摘要

Dy~(3+)/Tm~(3+) single doped and co-doped La_3PO_7 phosphors were synthesized by solid state reaction method. The single doped Dy~(3+)/Tm~(3+) ions showed their characteristic emissions yellow and blue. The luminescence intensity of this phosphor firstly increased and then decreased with increasing concentration of Dy~(3+) ions. The experimental results and the theoretical calculation indicate that the concentration quenching mechanism of Dy~(3+) ions in La_3PO_7 is the dipole-dipole interaction. By changing the doping concentration of Dy~(3+) and Tm~(3+) in La_3PO_7, their corresponding color coordinates are very close to the white color chromaticity coordinates (x = 0.33, y = 0.33). These results indicate that the La_(3-x-y)PO_7:xDy~(3+)-yTm~(3+) phosphors exhibit great potential for use as single-component phosphors for w-LEDs.

机译：通过固相反应法合成了Dy〜（3 +）/ Tm〜（3+）单掺杂和共掺杂的La_3PO_7荧光粉。单掺杂的Dy〜（3 +）/ Tm〜（3+）离子表现出特征性的发射黄色和蓝色。随着Dy〜（3+）离子浓度的增加，该荧光粉的发光强度先增大然后减小。实验结果和理论计算表明，La_3PO_7中Dy〜（3+）离子的浓度猝灭机理为偶极-偶极相互作用。通过改变La_3PO_7中Dy_（3+）和Tm〜（3+）的掺杂浓度，它们对应的色坐标非常接近白色色度坐标（x = 0.33，y = 0.33）。这些结果表明，La_（3-x-y）PO_7：xDy〜（3 +）-yTm〜（3+）荧光粉显示出用作w-LED的单组分荧光粉的巨大潜力。

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来源
《Optical Materials》 |2013年第2期|572-574|共3页
作者
Jiyou Wang; Jianbo Wang; Ping Duan;
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作者单位

College of Applied Sciences Beijing University of Technology Beijing 100022 China;

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收录信息美国《科学引文索引》(SCI);美国《工程索引》(EI);
原文格式 PDF
正文语种 eng
中图分类
关键词
Luminescence; La_(3_x_y)PO_7:xDy~(3+)-yTm~(3+); Phosphors; White LEDs;

机译：发光;La_（3_x_y）PO_7：xDy〜（3 +）-yTm〜（3+）;荧光粉白光LED;

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Luminescent properties of DY~(3+) or/and Tm~(3+) co-doped in La_3PO_7 for white LEDs

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