Under irradiation the formation of primary intrinsic defects in silver halide solid solutions AgBr1-xClx take place via strong exciton-phonon interaction. Efficiency of these defects formation depend on solid solution composition and within 0 <EQ x <EQ 0.15 dependence on temperature was observed too. Estimation shows efficiency of defects creation is approximately 0.01 for AgCl and noticeably higher for AgBr.
Two kinds of intrinsic luminescence in mixed AgBr1-xClx (1 io. Dependence of the parameters of this process on crystal composition has been investigated in terms of spatially well correlated Frenkel defect recombinations. The main effect found was the linear increase of the Agio migration energy with the crystal composition x. The second kind of luminescence arising due to exciton molecules has been shown to be sensitive to the solid solution composition and the quality of a crystal. It is shown that this luminescence correlates with the optical losses of the fibers studied.
Short-lived intrinsic defects in AgCl, AgBr, KRS-13 crystals
have been investigated. The observed primary Frenkel defects in
. . . 0 2+- cationic sublattice are assumed to be Ag. and Ag V • These
primary defects are created with similar efficiency in both AgC1
and KRS-13.
The deviation from the Vegard's law (linear dependence of a
lattice parameter on a component concentration containing in the
solid solution), especially well pronounced in the vicinity of
KRS-13 compound, has been observed.
An attempt of the vacuum purification of KRS-13 samples from
oxygen containing impurities has been undertaken. An analysis of
the thermally stimulated depol.arization current measurements has
showed that carrier redistribution between traps had taken place.
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