Spectroscopic Properties and Upconversion Studies in Ho3+/Yb3+ Co-doped Calcium Scandate with Spectrally Pure Green emission

被引：31

作者：

Li, Jing ^{[1
,3
]}

Zhang, Jiahua ^{[1
]}

Hao, Zhendong ^{[1
]}

Zhang, Xia ^{[1
]}

Zhao, Jihong ^{[2
]}

Luo, Yongshi ^{[1
]}

机构：

[1] Chinese Acad Sci, Changchun Inst Opt Fine Mech & Phys, State Key Lab Luminescence & Applicat, Changchun 130033, Peoples R China

[2] Jilin Canc Hosp, Changchun 130012, Peoples R China

[3] Univ Chinese Acad Sci, Beijing 100039, Peoples R China

来源：

CHEMPHYSCHEM | 2013年 / 14卷 / 18期

基金：

中国国家自然科学基金;

关键词：

dynamics; energy transfer; fluorescent probes; luminescence; phosphors; FLUOROINDATE GLASSES; LUMINESCENCE; YB3+; NANOPHOSPHORS; NANOPARTICLES; NANOCRYSTALS; LANTHANIDE; EXCITATION; PHOSPHORS; DYNAMICS;

D O I：

10.1002/cphc.201300842

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

The optical properties of a Ho3+/Yb3+ co-doped CaSc2O4 oxide material are investigated in detail. The spectral properties are described as a function of doping concentrations. The efficient Yb3+Ho3+ energy transfer is observed. The transfer efficiency approaches 50% before concentration quenching. The concentration-optimized sample exhibits a strong green emission accompanied with a weak red emission, showing perfect green monochromaticity. The results of the spectral distribution, power dependence, and lifetime measurements are presented. The green, red, and near-infrared (NIR) emissions around 545, 660, and 759 nm are assigned to the F-5(4)+(S2I8)-S-5-I-5, (F5I8)-F-5-I-5, and F-5(4)+(S2I7)-S-5-I-5 transitions of Ho3+, respectively. The detailed study reveals the upconversion luminescence mechanism involved in a novel Ho3+/Yb3+ co-doped CaSc2O4 oxide material.

引用

页码：4114 / 4120

页数：7

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