Premium
Free excitons and optical spectra of semiconductors
Author(s) -
Auvergne D.,
Camassel J.
Publication year - 1971
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.2220440227
Subject(s) - exciton , free carrier , coulomb , semiconductor , discontinuity (linguistics) , kinetic energy , excited state , spectral line , condensed matter physics , atomic physics , bound state , physics , absorption (acoustics) , quantum mechanics , optics , mathematics , mathematical analysis , electron
It is shown, that the excitonic wave functions exhibit a discontinuity at the transition between free and bound states. In the real case where carriers spend a finite time on excited levels, it is possible to neglect the Coulomb interaction when the two particles have a kinetic energy greater than a few Rydbergs. Using this hypothesis, an absorption curve in good agreement with the experimental results on GaAs is calculated.