Coefficient of Interband Light Absorption by InAs/GaхIn1-хAs Quantum Dot Superlattice at Low Temperatures

V.I. Boichuk; I.V. Bilynsky; R.I. Pazyuk

doi:10.15330/pcss.18.2.151-157

Authors

V.I. Boichuk Drohobych Ivan Franko State Pedagogical University
I.V. Bilynsky Drohobych Ivan Franko State Pedagogical University
R.I. Pazyuk Drohobych Ivan Franko State Pedagogical University

DOI:

https://doi.org/10.15330/pcss.18.2.151-157

Keywords:

quantum dot, superlattice, electronic states, absorption coefficient

Abstract

In the paper the InAs/Ga_xIn_1-xAs superlattice system of small size cubic QDs (10 nm) has been considered. Dispersion relations for electron and hole subbands have been calculated for superlattices of different dimensionality. The dependences of the interband absorption coefficient on light frequency, quantum dot size and interdot distance have been researched.It is shown, that the dimension of the superlattice has influence on the shape of the absorption bands and the increasingof the distance between quantum dots is followed by narrowing of the absorption peaks for all three superlatticetypes.

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