EFFECTS OF PARTICLE SIZE ON THE LUMINESCENCE OF YVO_4:Eu NANOCRYSTALS

摘要

YVO_4:Eu nanocrystals synthesized by direct precipitation reaction. The morphologic transformation of the nanocrystals as the results of thermal treatments were analyzed using optical spectroscopy. A red shift of the fluorescence lines with the increase of the crystallite size was observed. The kinetics of the ~5D_0 level of Eu~(3+) is also analyzed.