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Fine Structure in the Free Exciton Region of the Emission Spectrum of γ‐InSe
Author(s) -
Paraskevopoulos K. M.,
Julien C.,
Balkanski M.
Publication year - 1987
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.2221430234
Subject(s) - exciton , stacking , condensed matter physics , phonon , anomaly (physics) , spectrum (functional analysis) , variation (astronomy) , physics , molecular physics , materials science , quantum mechanics , nuclear magnetic resonance , astrophysics
The fine structure of the emission spectrum of γ‐InSe in the free exciton region has been investigated. The complete behaviour is given and the quantitative analysis is described in detail. Also, the doublet structure is examined and the possible stacking faults contribution is considered. It is found that the origin of the second peak is bound excitonic. The phonon modes involved in the temperature variation of the exciton energy are obtained from fitting the experimental data to previous theoretical calculations. An explanation is given for the temperature variation of the half width anomaly.