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The Kinetics of Excitons in Krypton Cryocrystals with Impurity Traps
Author(s) -
Belov A. G.,
Ya. Fugol I.,
Yurtaeva E. M.
Publication year - 1993
Publication title -
physica status solidi (b)
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.51
H-Index - 109
eISSN - 1521-3951
pISSN - 0370-1972
DOI - 10.1002/pssb.2221750110
Subject(s) - impurity , krypton , exciton , atomic physics , kinetics , trapping , excitation , luminescence , materials science , chemistry , condensed matter physics , physics , xenon , optoelectronics , ecology , organic chemistry , quantum mechanics , biology
The kinetics of energy transport by free (FE) and self‐trapped (STE) excitons is studied for krypton cryocrystals with impurity traps. The experimental data on the dependence of the intrinsic or sensitized luminescence spectrum on impurity concentration in Kr‐O 2 , Kr‐Ar‐O 2 , and Kr‐Xe solid solutions are considered. A model description of excitation motion and trapping in the presence of FE and STE is presented. The effect of different impurity centers on the balance relation between FE and STE in the matrix is determined. For small impurity concentrations the energy transport is shown to be realized by FE and for c > 10 −1 at% by STE.