Ultraviolet and Near-infrared Luminescence of Ce3+/Yb3+ Co-doping LiLuF4 Single Crystal

被引：1

作者：

Zhou Xiong ^{[1
]}

Fang Lizhi ^{[1
]}

Huang Shuangwu ^{[1
]}

Xia Haiping ^{[1
]}

Hu Jianxu ^{[1
]}

Zhang Jianli ^{[1
]}

Chen Baojiu ^{[2
]}

机构：

[1] Ningbo Univ, Key Lab Photoelect Mat, Ningbo 315211, Peoples R China

[2] Dalian Maritime Univ, Dept Phys, Dalian 116026, Peoples R China

来源：

JOURNAL OF INORGANIC MATERIALS | 2020年 / 35卷 / 05期

基金：

中国国家自然科学基金;

关键词：

Ce3+ and Yb3+; ultraviolet and infrared emissions; LiLuF4 single crystal; energy transfer; CE3+; CONVERSION; EMISSION;

D O I：

10.15541/jim20190215

中图分类号：

TQ174 [陶瓷工业]; TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

LiLuF4 single crystals doped with Ce3+ ion of 0.1mol% and Yb3+ ion of concentration varying from 0 to 2.0mol% were successfully synthesized by an improved Bridgman method. Intense near-infrared emission at around 1020 nm, attributed to the F-2(5/2) -> F-2(7/)2 transition of Yb3+, and ultraviolet emission of Ce3+ at 300-350 nm (5d -> 4f) was observed using excitation at 291 nm. Influence of Yb3+ ions concentration on the spectroscopic properties of Ce3+/Yb3+ co-doped LiLuF4 single crystal and the mechanism of energy transfer from Ce3+ to Yb3+ ions were explored through optical absorption and emission spectra. The temperature dependent emission indicated that the emission intensity constantly decreases with the increase of temperature from 298 to 443 K due to the enhancement of non-radiative quenching at high temperature. Ce3+/Yb3+ co-doped LiLuF4 single crystals mainly emit in the ultraviolet and near-infrared ranges. This unique property may be suitable for applications in anti-counterfeiting techniques and public security affairs.

引用

页码：556 / 560

页数：5

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