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Investigating the optical and electrical characteristics of As₆₀Cu_40-xSe_x thin films prepared using pulsed laser deposition method

J. S. Mohammed^a,*, F. K. Nsaif^b, Y. M. Jawad^a, K. A. Jasim^b, A. H. Al Dulaimi^a

a Department of Physics, College of Science, University of Diyala, Diyala, Iraq
b Department of physics, College of Education for pure sciences Ibn Al-Haitham, University of Baghdad ,Baghdad, Iraq

* Corresponding Author:

Chalcogenide Letters 2023, 20(7), 449-458. https://doi.org/10.15251/CL.2023.207.449

Received 15 March 2023; Accepted 04 July 2023;

Abstract

In this work, As₆₀Cu_40-xSe_x thin films were synthesized, and the pulsed laser deposition method was used to study the effected partial replacement of copper with selenium. The electrical characteristics and optical characteristics, as indicated by the absorbance and transmittance as a function of wavelength were calculated. Additionally, the energy gap was computed. The electrical conductivity of the DC in the various conduction zones was calculated by measuring the current and voltage as a function of temperature. Additionally, the mathematical equations are used to compute the energy constants, electron hopping distance, tail width, pre-exponential factor, and density of the energy states in variation zones (densities of the energetic extended states N_(Eext), localize N_(Eloc) and at the Fermi states N_(Ef)). The acquired data also demonstrated that the selenium concentration obviously had an impact on the electrical conduction mechanics, energy states, and the level of randomization.

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Keywords

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