稀土学报（英文版）
稀土學報（英文版）
희토학보（영문판）
JOURNAL OF RARE EARTHS
2013年
12期
1137-1140
,共4页
李琳%郭崇峰%焦桓%李婷%郑仲铉
李琳%郭崇峰%焦桓%李婷%鄭仲鉉
리림%곽숭봉%초환%리정%정중현
phosphor%up-conversion%energy transfer%luminescence%rare earths
Yb3+and Pr3+co-doped BaRE2ZnO5 (RE=Y, Gd) up-conversion (UC) phosphors were successfully synthesized by a modi-fied sol-gel method. The processing parameters and optimal concentration of Pr3+and Yb3+were determined. The structures and lu-minescent properties of samples were characterized by X-ray diffraction (XRD) and photoluminescence spectra (PL). With the exci-tation of 980 nm laser diode, UC spectra showed five prominent emission bands centered at 484, 514, 546 , 656 and 670 nm, which were attributed to the 1I6→3H4, 3P1→3H4, 3P0→3H5, 3P0→3F2 and 3P0→3F3 transitions of Pr3+, respectively. In the light of the pump power dependence, the possible UC mechanism in Yb3+and Pr3+co-doped BaRE2ZnO5 (RE=Y, Gd) was proposed and discussed.
