Enhanced cooperative near-infrared quantum cutting in Pr～(3+)-Yb～(3+)co-doped phosphate glass  

作　　者：徐波 张约品 杨斌 夏海平 

机构地区：[1]Key Laboratory of Photoelectronic Materials,Ningbo University

出　　处：《Optoelectronics Letters》2012年第6期453-455,共3页光电子快报（英文版）

基　　金：supported by the National Natural Science Foundation of China(Nos.61275180,51272109and50972061);the Natural Science Foundation of Zhejiang Province(Nos.Z4110072and R4100364);the Opening Foundation of Zhejiang Provincial Top Key Discipline;K.C.Wong Magna Fund in Ningbo University

摘　　要：Pr3+and Yb3+co-doped phosphate glasses are prepared to study their optical properties.Excitation and emission spectra and decay curves are used to characterize their luminescence.We demonstrate that upon excitation of Pr3+ion with one high energy photon at 470 nm,two near-infrared(NIR)photons are emitted at 950-1100 nm(Yb3+:2F 5/2 →2F 7/2)through an efficient cooperative energy transfer(CET)from Pr3+to Yb3+.The maximum energy transfer efficiency(ETE)and the corresponding quantum efficiency approach up to 90.17%and 190.17%,respectively.The glass materials might find potential application for improving the efficiency of silicon-based solar cells.

关 键 词：Emission spectroscopy Energy transfer Glass Infrared devices Light Optical properties PHOTONS 

分 类 号：TN204[电子电信—物理电子学]