Effect of annealed temperature on some structural, optical and mechanical properties of selenium thin film

Alaa A Abdul-Hamead

doi:10.30723/ijp.v12i24.321

Abstract

In this paper a thin films of selenium was prepare on substrates of n-Si by evaporation in a vacuum technique with thickness about 0.5μm. And then an annealing process was done on samples at two temperature (100 and 200) C ° in a vacuum furnace (10-3 torr).Some structural, optical and mechanical properties of prepared thin films were measured. Results showed that the prepared film was the crystallization, optical transmittance and micro hardness of the prepared thin films increased significantly after annealing.

Highlights

Selenium is known as an essential element for life due to its great nutritional effect and many fascinating properties in biology,chemistry and physical sciences: for example, protecting cells against the effects of free radicals that are produced during normal oxygen metabolism, reinforcing the normal functions of the immune system and thyroid gland, localizing malfunction in the pancreas, and the safe uses of selenium in agriculture and in the biosciences [1]
Cabral et al [8], study Nano gravimetric study of lead under potential deposition of selenium thin films as a semiconductor alloy formation procedure, an electrochemical quartz crystal, microbalance Au electrode modified with a Se thin film was used to investigate the electrochemical behavior of lead atoms using under potential deposition (UPD) conditions. These findings offer a new strategy for alloy formation in semiconductor films using an effective tool to quantify the exact amount of the incorporated metal
The goals of this paper are to fabrication selenium thin film by evaporation technique, and study some of structural, optical and mechanical properties, and the effect of annealing in a vacuum

Summary

Introduction

Selenium is known as an essential element for life due to its great nutritional effect and many fascinating properties in biology ,chemistry and physical sciences: for example, protecting cells against the effects of free radicals that are produced during normal oxygen metabolism, reinforcing the normal functions of the immune system and thyroid gland, localizing malfunction in the pancreas, and the safe uses of selenium in agriculture and in the biosciences [1].Amorphous (semiconducting) selenium is used for electro-static imaging, as well as for photovoltaic cells, in the visible region of the electromagnetic spectrum. It would be of practical importance to develop materials sensitive over a wide region of wavelengths [2].Methods for fabrication of thin films in general and selenium such as evaporation, electroplating spray pyrolysis etc.

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