Synthesis and luminescence of spherical Y_2O_3:Eu~(3+) and Y_2O_3:Eu~(3+)/Bi~(3+) particles

摘要

Y_2O_3:Eu~(3+) and Y_2O_3:Eu~(3+)/Bi~(3+) particles with spherical morphology are synthesized by microwave-assistant hydrothermal process. The results show that cubic phase Y_2O_3:Eu~(3+) and Y_2O_3:Eu~(3+)/Bi~(3+) particles with uniform size and spherical shape are obtained. The doping Eu~(3+) and Bi~(3+) ion have no influence on the phase and morphology of samples. In the hydrothermal process, the fast and homogeneous microwave heating benefits the formation of samples with uniform size and spherical shape. Both Y_2O_3:Eu~(3+) and Y_2O_3:Eu~(3+)/Bi~(3+) show dominant red emission originating from the ~5D_0 → ~7F_2 transition of Eu~(3+). The codoping Bi~(3+) can enhance the intensity of Eu~(3+) emission.