Distribution of electron density of states in allowed bands and interband absorption in amorphous semiconductors
Different types of electronic transitions and the corresponding spectral characteristics of the absorption coefficient of amorphous semiconductors, where the energy of absorbed photons exceeds the mobility band gap, have been investigated. Partial spectral characteristics of the absorption coefficie...
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| Veröffentlicht in: | Optics and spectroscopy 2011-05, Vol.110 (5), p.762-766 |
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| container_title | Optics and spectroscopy |
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| creator | Zainobidinov, S. Ikramov, R. G. Zhalalov, R. M. Nuritdinova, M. A. |
| description | Different types of electronic transitions and the corresponding spectral characteristics of the absorption coefficient of amorphous semiconductors, where the energy of absorbed photons exceeds the mobility band gap, have been investigated. Partial spectral characteristics of the absorption coefficient and, correspondingly, the distributions of the electron density of the states involved in these optical transitions are obtained for the case where the electron densities of states in the allowed bands and the tails of these bands change with energy according to the power and exponential laws, respectively. The conditions for the occurrence of a peak in the spectral characteristic of the interband absorption coefficient are determined. |
| doi_str_mv | 10.1134/S0030400X11030271 |
| format | Article |
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| issn | 0030-400X 1562-6911 |
| language | eng |
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| subjects | Condensed-Matter Spectroscopy Lasers Optical Devices Optics Photonics Physics Physics and Astronomy |
| title | Distribution of electron density of states in allowed bands and interband absorption in amorphous semiconductors |
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