Study of the Optical Characteristics of Aluminim Doped Zno Thin Film

Authors: Emmanuel IU

Volume 5, Issue 2

Abstract

In this work, the study on the influence of the aluminium on the optical properties of ZnO thin film was carried out with a focus on the influence of variation of aluminium ions on the optical behaviour of the ZnO thin film. The film was deposited on the glass substrates by chemical bath deposition technique and aluminium was used in the following varied quantity 0.1, 0.2, and 0.3M to dope the thin films respectively. The solutions were prepared using zinc sulphate, ammonia and Hexamine with aluminium nitrate. The optical characteristics of the film such as the spectral absorbance, reflectance and transmittance within the ultraviolet and near infra red region of electromagnetic wave spectra were investigated using UV-VIS spectroscopy with the energy band gap found to be in the range of 3.5eV to 3.9eV.

Keywords: Zinc Oxide; Aluminium; Influence; doping; chemical bath deposition; Optical properties; Band gap

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