Cooperative energy transfer in Tm^(3+)and Yb^(3+) co-doped phosphate glasses  

作　　者：徐波 杨斌 张约品 夏海平 王金浩 

机构地区：[1]Key Laboratory of Photo-electronic Materials,Ningbo University

出　　处：《Journal of Rare Earths》2013年第2期164-168,共5页稀土学报（英文版）

基　　金：Project supported by National Natural Science Foundation of China(61275180,50972061,51272109);Natural Science Founda tion of Zhejiang Province(Z4110072,R4100364);the Opening Foundation Opening Foundation of Zhejiang Provincial Top Key Discipline;supported by the K.C.Wang Magna Fund in Ningbo University

摘　　要：An efficient near-infrared （NIR） quantum cutting （QC） in Tm3＋ and Yb3＋ co-doped phosphate glasses was demonstrated, which involved the emission of two NIR photons from an absorbed visible photon via a cooperative energy transfer （CET） from Tm3＋ to Yb3＋ ions. Judd-Ofelt （J-O） theory was used to calculate the intensity parameters （ 2 , 4 , 6 ）, the radiative transition rates （Ar ）, and radiative transition lifetime （τ rad ） of Tm3＋ . Based on Inokuti-Hirayama＇s model, the energy transfer processes were studied and results indicated that the energy transfer of the electric dipole-dipole （Edd） was dominant in this system. Quantum efficiency related to Yb 3＋ concentration was calculated, and the maximum QE efficiency reached 169.8%.An efficient near-infrared （NIR） quantum cutting （QC） in Tm3＋ and Yb3＋ co-doped phosphate glasses was demonstrated, which involved the emission of two NIR photons from an absorbed visible photon via a cooperative energy transfer （CET） from Tm3＋ to Yb3＋ ions. Judd-Ofelt （J-O） theory was used to calculate the intensity parameters （ 2 , 4 , 6 ）, the radiative transition rates （Ar ）, and radiative transition lifetime （τ rad ） of Tm3＋ . Based on Inokuti-Hirayama＇s model, the energy transfer processes were studied and results indicated that the energy transfer of the electric dipole-dipole （Edd） was dominant in this system. Quantum efficiency related to Yb 3＋ concentration was calculated, and the maximum QE efficiency reached 169.8%.

关 键 词：phosphate glass energy transfer quantum cutting I-H model rare earths 

分 类 号：TQ171.1[化学工程—玻璃工业]