稀土学报(英文版)
稀土學報(英文版)
희토학보(영문판)
JOURNAL OF RARE EARTHS
2004年
3期
365-369
,共5页
郭海%张慰萍%尹民%楼立人%夏上达
郭海%張慰萍%尹民%樓立人%夏上達
곽해%장위평%윤민%루립인%하상체
optics%upconversion luminescence%sol-gel%Gd2O3∶Er3+%rare earths
Gd2O3∶Er nanoparticles were prepared by a simple sol-gel method. The structure properties of Gd2O3∶Er were studied by X-ray diffraction, transmission electron microscopy, Raman spectroscopy and Fourier transform infrared spectroscopy. The visible up-converted luminescence spectra of Er3+ were investigated under excitation to 4I9/2 level by 785 nm laser. Laser power, Er3+ ion concentration and temperature dependences of the upconverted emissions were investigated to understand the upconversion mechanisms. Excited state absorption and energy transfer process are discussed as the possible mechanisms for the upconversion.
