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Recombination kinetics of electrons with α‐ centers in colored alkali halides
Author(s) -
Hoffmann H. J.
Publication year - 1981
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.2221070122
Subject(s) - recombination , excited state , halide , electron , alkali metal , atomic physics , charge carrier , ion , halogen , thermal conduction , kinetics , ground state , chemistry , materials science , physics , inorganic chemistry , optoelectronics , composite material , biochemistry , alkyl , organic chemistry , quantum mechanics , gene
The recombination kinetics of conduction electrons with halogen‐ion vacancies (α‐centers) in additively colored alkali halides is calculated and discussed for the high‐temperature range, in which concurring F′‐centers decay thermally. The steady state concentrations of conduction electrons, α‐, and F′‐centers as well as the time constants are explicitly given under the assumption that the charge carriers recombine with α‐centers predominantly via the excited state F* of the vacancies. These results are compared with experimental data and former theoretical calculations for the case that recombination directly into the ground state is predominant. The results on the effective recombination coefficient can also be applied to other defects in photoconductors and semiconductors if the charge carriers recombine via an excited state.