Fulltext

Structural and Surface Characteristics of Cd0.9Sb0.1Se Thin Films Prepared by Thermal Evaporation

Wisam A. Altun

Iraqi Journal of Applied Physics المجلة العراقية للفيزياء التطبيقية
ISSN: 18132065 23091673 Year: 2018 Volume: 14 Issue: 1 Pages: 23-26
Publisher: iraqi society for alternative and renewable energy sources and techniques الجمعية العراقية لمصادر وتقنيات الطاقة البديلة والمستجدة

Abstract

In this work, thin films of Cd0.9Sb0.1Se were successfully deposited on glass substrates by thermal evaporation method at room temperature. The Cd1-xSbxSe alloy composed of highly-pure Cd, Sb and Se samples was prepared with x=0.1 by melting method in a tube furnace at 900°C. The structural and surface characteristics of these thin films were studied by the x-ray diffraction and atomic force microscopy to determine their dependencies on film thickness. These films were amorphous and the grain size as well as the surface roughness was increasing with film thickness. The energy band gap was decreased from 2.6 to 2.15 eV with increasing film thickness from 150 to 450 nm. These structures are efficient candidates for some applications such as quantum devices.

Keywords

Ternary compound --- Thermal evaporation --- Thin films --- Structural characteristics