Characterization of Optical and structure properties of composite chalcogenide GeTe1.4In0.6 thin films with different thicknesses

Authors

  • Tarek Ghasan Ayoud Damascus university tarek.ayoud@damascusuniversity.edu.sy
  • Dr. Iyad Anees Mdawar Damascus university Iyad.Mdawar@damascusuniversity.edu.sy

Keywords:

Chalcogenide glass, energy gap, transmittance, optical Conductivity, extinction coefficient

Abstract

In this work, the optical and structure properties of the GeTe1.4 In0.6 thin

films prepared by thermal evaporation method with the different thicknesses (441nm, 720nm, and 941nm) were studied. The thoughtful powder sample has a polycrystalline structure as shown from XRD analysis. The surface of the thin films were investigated by the atomic

force   microscope (AFM).It showed, that the grain size of the prepared

films increases when increasing the films thickness. Also the optical properties of thin films in the range of (400nm-2500nm) were studied.

The refractive index (n), the extinction coefficient (k), the energy gap (Eg) and optical conductivity were calculated. We noticed that by changing the films thicknesses, these values vary differently, energy gap is decreased while the absorption coefficient is increased by increasing the films thickness. this is could be due to the entry react of the indium element with the structure of the studied thin films.

 

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Published

2024-06-24

Issue

Vol. 40 No. 2 (2024): Damascus University Journal for The Basic Sciences

Section

المقالات

How to Cite

Characterization of Optical and structure properties of composite chalcogenide GeTe1.4In0.6 thin films with different thicknesses. (2024). Damascus University Journal for the Basic Sciences, 40(2). https://journal.damascusuniversity.edu.sy/index.php/basj/article/view/6411