Preparation and luminescence properties of Eu3+ doped niobium silicate glass ceramics

摘要

niobium silicate glass with the mass composition of 35SiO_2-25Nb_2O_5-20Na2O-10K2O-7B_2O_3-3Eu_2O_3 was synthesized by a traditional glass melting method. Glass ceramics containing Na_2Nb_8O_(21) nanocrystals were prepared by heat treating the glass samples. The results of X-ray diffraction (XRD) indicated that the crystallite in the glass ceramics is Na_2Nb_8O_(21) nanocrystals. The luminescence spectra showed the emission intensity of Eu~(3+) doped glass ceramics was stronger than that of the glass matrix, and increased with the heat treatment temperature increasing..The transmittance of the glass ceramics can be up to 80% in the near-infrared light area.