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Biexcitons, impurity transitions, and electron–hole plasma in highly excited II–VI compounds?
Author(s) -
Schrey H.,
Klingshirn C.
Publication year - 1978
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.2220900107
Subject(s) - excited state , impurity , biexciton , atomic physics , excitation , inelastic scattering , luminescence , spectroscopy , scattering , electron , atomic electron transition , plasma , materials science , exciton , chemistry , condensed matter physics , physics , spectral line , optics , optoelectronics , organic chemistry , quantum mechanics , astronomy
To determine the origin of the so‐called M‐ and P‐emission bands, observed in highly excited II–VI compounds at low temperature, CdS is investigated at 5 K by means of excitation spectroscopy. The results are discussed in terms of inelastic scattering processes, biexcitons, impurity transitions, and electron–hole plasma (EHP), including in the discussion also results published by other authors. It is shown that in II–VI compounds the high‐excitation luminescence is mainly due to inelastic scattering processes and to impurity transitions at low temperature and that it is only to a smaller extent caused by EHP and biexciton decay.