Synchrotron radiation source was used to investigate the spectral characteristics of Gd 2SiO 5:Eu 3+ in VUV-UV range. The various energy transfers at room temperature and 10K

including from host or Gd 3+ ions to Eu 3+ ions and transfer between Eu 3+ ions at two different lattice sites

were discussed. In addition the emission spectra under 186nm and 276nm excitation were compared from the view of quantum cutting. The results indicate that Gd 2SiO 5:Eu 3+ is a kind of material with potential high efficiency quantum cutting.