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Preparation and Some Properties of Metal Organic Chemical Vapour Deposited Al-Doped ZnO Thin Films Using Single Solid Precursors
| Content Provider | Semantic Scholar |
|---|---|
| Author | Akinwunmi, Olumide Oluwole Famojuro, Adetokunbo Temitope Ajayi, Ezekiel Oladele Bolarinwa |
| Copyright Year | 2018 |
| Abstract | Zinc Oxide (ZnO) and Aluminium doped ZnO (AZO) thin films were deposited on soda lime glass by Metal Organic Chemical Vapour deposition technique (MOCVD), using prepared compound mixtures of Zinc Acetate di-hydrate (Zn(CH3COO)2·2H2O; ZAD) and Aluminium Acetyl-Acetonate (Al(C5H702)3; AAA) precursors at a temperature of 420 ̊C. Effects of the varying mole percent concentrations of AAA precursor additives on the Al dopant concentrations in ZnO were systematically studied. The observations were made via investigations carried out on the morphological, optical, electrical and compositional properties of the deposited thin films. The thin films morphology was found to be strongly dependent on the varying concentration of AAA in the precursor mixtures. The average optical transmittance of the thin films in the uv-visible region was over 85% except 5 mol.% Al. While the energy band gaps were found to be in range of 3.27 3.36 eV. There is a blue-shift of the energy band edge observed between 0 and 5 mol.% AAA, which may be due to Burstein-Moss’ band gap widening effect and an opposing band gap renormalization effect at 10 mol.% AAA along with an extra band gap stabilization effect (Roth’s effect) at 15 mol.% AAA in rather quasi-sinusoidal or anomalous behaviour. The optical transmittance and electrical conductivity of ZnO were enhanced with addition of Al dopants. The RBS confirm the presence of Al, Zn and O, and evidence that Al dopants were successfully incorporated into the ZnO. How to cite this paper: Akinwunmi, O.O., Ogundeji, J.A.O., Famojuro, A.T., Akinwumi, O.A., Ilori, O.O., Fadodun, O.G. and Ajayi, E.O.B. (2018) Preparation and Some Properties of Metal Organic Chemical Vapour Deposited Al-Doped ZnO Thin Films Using Single Solid Precursors. Journal of Modern Physics, 9, 2073-2089. https://doi.org/10.4236/jmp.2018.911130 Received: July 13, 2018 Accepted: September 25, 2018 Published: September 28, 2018 Copyright © 2018 by authors and Scientific Research Publishing Inc. This work is licensed under the Creative Commons Attribution International License (CC BY 4.0). http://creativecommons.org/licenses/by/4.0/ |
| File Format | PDF HTM / HTML |
| Alternate Webpage(s) | https://file.scirp.org/pdf/JMP_2018092717102361.pdf |
| Language | English |
| Access Restriction | Open |
| Content Type | Text |
| Resource Type | Article |
