Green up-conversion luminescence in Yb~(3+)-Pr~(3+) co-doped BaRE_2ZnO_5(RE=Y,Gd)

• 作 者: 李琳 郭崇峰 焦桓 李婷 郑仲铉
• 机 构: National Key Laboratory of Photoelectric Technology and Functional Materials (Culture Base) in Shaan
• 出 处: Journal of Rare Earths
• 发表日期: 2013年12期
• 关键词: luminescence luminescent attributed bands excitation transitions centered phonon

Yb3+and Pr3+co-doped BaRE2ZnO5(RE=Y,Gd)up-conversion(UC)phosphors were successfully synthesized by a modified sol-gel method.The processing parameters and optimal concentration of Pr3+and Yb3+were determined.The structures and luminescent properties of samples were characterized by X-ray diffraction(XRD)and photoluminescence spectra(PL).With the excitation 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 the1I6→3H4,3P1→3H4,3P0→3H5,3P0→3F2and3P0→3F3transitions 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.

Yb3 + and Pr3 + co-doped BaRE2ZnO5 (RE = Y, Gd) up-conversion (UC) phosphors were synthesized by a modified sol- gel method. The processing parameters and optimal concentrations of Pr3 + and Yb3 + were determined. structures and luminescent properties of samples were characterized by X-ray diffraction (XRD) and photoluminescence spectra (PL) .With the excitation 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 the1I6 → 3H4,3P1 → 3H4,3P0 → 3H5,3P0 → 3F2and3P0 → 3F3transitions 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.