Journal of Physical Chemistry A, Vol.101, No.50, 9571-9577, 1997
Tb3+ luminescence in Tb-doped and Tb/Gd-doped CsCdBr3 crystals: D-5(4)->D-5(3) cross-relaxation rates in Tb3+ pairs
The luminescence properties of Tb3+ in Tb3+-Tb3+ and Tb3+-Gd3+ majority-type pairs in CsCdBr3 are investigated at 77 K and room temperature D-5(3)-->D-5(4) cross-relaxation rates for Tb3+ in Tb3+-Tb3+ pairs are determined. The intrinsic D-5(3)-->D-5(4) and D-5(3)-->F-7(1) relaxation rates of Tb3+ in the majority-pair site are estimated. The relative numbers of Tb3+-Tb3+ and Tb3+-Gd3+ pairs in Tb/Gd-doped CsCdBr3 are shown to be consistent with statistical pair formation.