Features of the luminescence kinetics of Pr3+ ions in the Y2SiO5 crystal

A temperature-dependent change in the decay kinetics of the luminescence of Pr3+ impurity ions in the Y2SiO5 crystal is observed. On the basis of the deviation of the luminescence decay law from a single-exponential form and the presence of a characteristic rising front in the luminescence kinetics it is established that there is a temperature-dependent transfer of electronic excitation energy between two optical centers in the Y2SiO5 crystal. (C) 2000 American Institute of Physics. [S1063-777X(00)00805-7].