Abstract
AbstractTime‐resolved excitation spectra were measured at the same conditions at 10 K in the 4–20 eV energy range for the luminescence of self‐trapped and various localized excitons as well as of Ce3+‐, Pb2+‐, and Bi3+‐related centers in single crystals and single crystalline films of Lu3Al5O12 garnet. The decay kinetics of the intrinsic 4.9 and 3.65 eV luminescence of Lu3Al5O12 crystals were studied at 4.2–300 K in the 10−9–10−3 s time range. The origin and structure of the exciton states as well as the luminescence, energy transfer, and recombination processes, taking place under excitation in the exciton absorption region, were discussed. The influence of various defects on the scintillation characteristics of Ce3+‐ and Pr3+‐doped Lu3Al5O12 crystals was considered.
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