Energy transfer between Gd{sup}(3+) and other rare earth ions in the UV region

摘要

Energy transfer from Pr{sup}(3+), Nd{sup}(3+), Er{sup}(3+) or Tm{sup}(3+) to Gd{sup}(3+) leading to Gd{sup}(3+) emission at 312nm was observed in GdPO{sub}4 doped with these ions under 172nm excitation. Among these ions, P{sup}(3+) provides the strongest Gd{sup}(3+) emission. Energy transfer from Gd{sup}(3+) to Dy{sup}(3+) was also observed under excitation by Gd{sup}(3+) absorption at 276nm. As a result of this energy transfer, Gd{sup}(3+) emission is quenched and strong, visible luminescence of Gd{sup}(3+) appears. Such energy transfer processes are to be taken in account, when a quauntum cutting process using Gd{sup}(3+) ions is investigated.