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Theoretical Investigation of Auger Recombination in PbSnTe Structures
Author(s) -
Lemke F.,
Mocker M.
Publication year - 1991
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.2221670124
Subject(s) - auger , auger effect , anisotropy , dimension (graph theory) , atomic physics , materials science , recombination , condensed matter physics , chemistry , physics , optics , mathematics , pure mathematics , biochemistry , gene
An approximate analytical formula of the Auger rate is developed, describing the rate in dependence on the dimension parameter v with v = 3, 2, 1 for bulk, quasi‐two‐dimensional, and quasi‐one‐dimensional structures, respectively. The main influence to the Auger coefficient is due to the increased effective gap in low‐dimensional structures, leading to an increased activation energy and therefore in lead chalcogenides to a reduced Auger rate compared to the bulk. The effects of anisotropy and of the changed matrix elements modify this main effect in such a way, that Auger recombination in some special planes and directions is more effective than in others.