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Semiconductor Physics, Quantum Electronics & Optoelectronics. 2011. V. 14, N 4. P. 445-451.
Influence of polarization of conduction electrons
in semiconductor on their light absorption
National Aviation University, Department for Theoretical Physics
1, Cosmonaut Komarov prospect, 03058 Kyiv, Ukraine
E-mail: severinvs@ukr.net
Abstract.
The influence of polarization of conduction electrons in semiconductor on
their light absorption is examined. The Drude model is used for the description of an
electron motion inside conduction band. Account of electron screening the external
electric field essentially modifies the expression for the light absorption coefficient in
comparison with that in the traditional theory. As a result, the absorption spectrum
becomes “resonance” like.
Keywords: dielectric permittivity, polarization, optical properties, intraband optical
absorption.
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