Effects of the deposition temperature on some of the properties of electrodeposited aluminium selenide (AL2SE3)

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O. Olubosede
O. M Osiele
A. A Faremi
F. M. Owolabi
J. C Ehiabhili
G. E. Adesakin

Abstract

Aluminium selenide (Al2Se3) is quite promising in the fabrication of electronic devices. In this paper, Al2Se3 thin films were deposited on glass substrate using electro chemical deposition technique in which graphite was used as a cathode while the anode was carbon. In the deposition of Al2Se3 the source of the aluminium was aluminium chloride while selenium dioxide was the source of selenide. In the deposition process, the reaction bath was maintained at the temperature of 30, 40, 50, 60 and 70°C
for nine minutes with a deposition voltage of 1200 mV and the deposited thin films were characterized structurally, optically and electrically. The characterization of the deposited Al2Se3 thin films reveals that its thickness increased with increase in deposition temperature. The Al2Se3 thin films absorbed, transmitted and reflected electromagnetic radiation in the wavelength range of 300 to 900 nm. The films have maximum absorbance in the ultra violet region, maximum transmittance in the infra-red region with low reflectance in the ultra violet, visible and infra-red regions of the electromagnetic spectrum. Increase in the deposition temperature reduces the energy band gap of Al2Se3. Electrical characterization revealed that Al2Se3 thin film deposited at 70°C exhibited N-type conductivity while those deposited between 30 and 60°C that exhibited P-type conductivity.

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How to Cite
Olubosede, O., Osiele , O. M., Faremi , A. A., Owolabi , F. M., Ehiabhili, . J. C., & Adesakin , G. E. (2022). Effects of the deposition temperature on some of the properties of electrodeposited aluminium selenide (AL2SE3). NIGERIAN JOURNAL OF SCIENCE AND ENVIRONMENT, 19(1). Retrieved from https://delsunjse.com/index.php/njse/article/view/45
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