Thermal ionization and thermally activated crossover quenching processes for 5d-4f luminescence in Y3 A l5-x G ax O12: P r3+

We investigated thermally activated ionization and thermally activated crossover as the two possibilities of quenching of 5d luminescence in Pr3+-doped Y3Al5-xGaxO12. Varying the Ga content x gives the control over the relative energy level location of the 5d and 4f2:PJ3 states of Pr3+ and the host conduction band (CB). Temperature-dependent...