Efficient near-infrared down-conversion in KCaGd(PO4)2:Ce3+, Yb3+

被引：21
作者：
Zhao, Lei [1 ]
Han, Lili [1 ]
Wang, Yuhua [1 ]
机构：
[1] Lanzhou Univ, Dept Mat Sci, Sch Phys Sci & Technol, Lanzhou 730000, Peoples R China
来源：
OPTICAL MATERIALS EXPRESS | 2014年 / 4卷 / 07期
基金：
美国国家科学基金会;
关键词：
ENERGY-TRANSFER; QUANTUM; LUMINESCENCE; TM; TB; PERFORMANCE; PHOSPHORS; RE; EU; CE;
D O I：
10.1364/OME.4.001456
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
A novel near-infrared (NIR) quantum cutting KCaGd(PO4)(2):Ce3+,Yb3+ phosphor was successfully developed. Due to the cooperative energy transfer from one Ce3+ to two Yb3+, an intense NIR emission around 1021 nm of Yb3+:F-2(5/2)-F-2(7/2) transition was obtained under 324 nm excitation. Yb3+ concentration dependent quantum efficiency has been calculated and the theoretical maximum efficiency approaches up to 158.2%. Because the emission of Yb3+ around 1021 nm is matched with the band gap of crystalline Si, the phosphors could be a potential candidate for silicon-based solar cells. (C) 2014 Optical Society of America
引用
收藏
页码：1456 / 1464
页数：9
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