Photoluminescent Properties of Sb-Doped Phosphate Glass

摘要

The authors report on the UV-excited photoluminescence measured in Sb_2O_3-ZnO-P_2O_5 glass. Pre-heat treatment performed before melting effectively prevented the discoloration caused by precipitation of Sb nanoparticles. Although both Sb~(3+) and Sn~(2+) belong to the ns~2-type emission center, the Sb~(3+)-doped 60ZnO-40P_2O_5 glass showed an emission with a weaker intensity and a broader band than Sn~(2+)-doped 60ZnO-40P_2O_5 glass. The emission decay of 1.0SbO_(3/2)-60ZnO-40P_2O_5 glass was about 2.5 μs, which was shorter than that of 1.0SnO-60ZnO-40P_2O_5 glass. The obtained results suggest that the emission properties of ns~2-type emission centers depend on several factors, such as element of emission center, chemical composition, and preparation scheme, which are easily and widely tuned in random amorphous materials.