Journal of Applied Science and Engineering

Published by Tamkang University Press


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R.G. Ikramov1, A.A. Mamaxanov1, M.A. Nuriddinova1, R.M. Jalolov2, Kh.A. Muminov This email address is being protected from spambots. You need JavaScript enabled to view it.1, and B.Q. Sultonov1

1Namangan Engineering and Technology Institute, 7 Kosonsoy Street, Namangan 160115, Uzbekistan
2Namangan State University, 316 Uychi street, Namangan 160136, Uzbekistan


Received: September 17, 2021
Accepted: November 9, 2021
Publication Date: December 22, 2021

 Copyright The Author(s). This is an open access article distributed under the terms of the Creative Commons Attribution License (CC BY 4.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are cited.

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A new method is presented for calculating the interband absorption spectrum for amorphous semiconductors using the Kubo-Greenwood formula in accordance with the Davis-Mott approximation method. It is shown that the calculated spectrum of interband absorption explained the experimental results, and a method is recommended to reduce the indefinite integral in the Kubo-Greenwood formula to a definite integral. It is explained that the boundaries of a definite integral are determined according to the empirical Tauc model, written for the distribution of the density of electronic states in amorphous semiconductors.

Keywords: amorphous semiconductors, interband optical transitions of electrons, interband absorption spectrum, Kubo-Greenwood formula, Davis-Mott approximation method, empirical Tauc model.


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