Cooperative downconversion in GdAl3(BO3)4:RE3+,Yb3+ (RE=Pr, Tb, and Tm)

被引：241
作者：
Zhang, Q. Y. [1 ]
Yang, G. F.
Jiang, Z. H.
机构：
[1] S China Univ Technol, Minist Educ, Key Lab Specially Funct Mat, Guangzhou 510641, Peoples R China
[2] S China Univ Technol, Inst Opt Commun Mat, Guangzhou 510641, Peoples R China
[3] Chinese Acad Sci, Shanghai Inst Opt & Fine Mech, Shanghai 201800, Peoples R China
来源：
APPLIED PHYSICS LETTERS | 2007年 / 91卷 / 05期
关键词：
D O I：
10.1063/1.2757595
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
An efficient near-infrared (NIR) quantum cutting (QC) in GdAl3(BO3)(4):RE3+,Yb3+ (RE=Pr, Tb, and Tm) phosphors has been demonstrated, which involves the conversion of the visible photon into the NIR emission with an optimal quantum efficiency approaching 200%, by exploring the cooperative downconversion mechanism from RE3+ (RE=Pr, Tb, and Tm) excitons to the two activator ions, Yb3+. The development of NIR QC phosphors could open up a new approach in achieving high efficiency silicon-based solar cells by means of downconversion in the visible part of the solar spectrum to similar to 1000 nm photons with a twofold increase in the photon number. (c) 2007 American Institute of Physics.
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