The excitation spectra at room temperature were also measured throughdetecting its emission wavelength at 800nm,there were three broad excitationbands peaked at about 330,470,640nm at UV and visible region.

• 它们的室温激发谱是通过捡测800nm 发射进行测量的,在紫外和可见区有三个宽的激发带,其峰值位置分别为330、470、640nm。