Optical spectra and a tail in the density of states of the disordered solid solution ZnSe1−c Tec |
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Authors: | A. A. Klochikhin S. A. Permogorov A. N. Reznitskii |
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Affiliation: | (1) St. Petersburg Nuclear Physics Institute, Russian Academy of Sciences, 188350 Gatchina, Leningrad District, Russia;(2) A. F. Ioffe Physicotechnical Institute, Russian Academy of Sciences, 194021 St. Petersburg, Russia |
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Abstract: | A calculational scheme is presented to determine the density of states in the fluctuation tail for the disordered solid solution ZnSe1−c Tec at concentrations below the threshold for percolation over sublattice sites. Zero-phonon absorption and luminescence bands in the region of the exciton ground state are found using an approach developed earlier. Phonon coupling is taken into account, and vibronic absorption and luminescence bands are obtained. Experimental data are shown to be in a good agreement with the calculations. Fiz. Tverd. Tela (St. Petersburg) 40, 1420–1425 (August 1998) |
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