C
Cosmas M. Muiva
Researcher at Botswana International University of Science and Technology
Publications - 33
Citations - 867
Cosmas M. Muiva is an academic researcher from Botswana International University of Science and Technology. The author has contributed to research in topics: Thin film & Band gap. The author has an hindex of 11, co-authored 31 publications receiving 610 citations. Previous affiliations of Cosmas M. Muiva include University of Botswana & Carnegie Learning.
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Effect of doping concentration on the properties of aluminium doped zinc oxide thin films prepared by spray pyrolysis for transparent electrode applications
TL;DR: In this article, transparent conducting aluminium doped zinc oxide (ZnO:Al ) thin films were deposited on float glass substrates by tailor made spray pyrolysis with adaptation for measuring the actual temperature of the substrate surface during deposition.
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Extraction of nanocellulose and in-situ casting of ZnO/cellulose nanocomposite with enhanced photocatalytic and antibacterial activity.
TL;DR: Zinc oxide/cellulose nanocomposite displayed more photocatalytic activity than pure ZnO nanostructures upon degradation of methylene blue, and also improved antibacterial activity against Gram-positive Staphylococcus aureus and Gram-negative Escherichia coli.
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Synthesis and characterization of CuO-NiO-ZnO mixed metal oxide nanocomposite
Albert Juma,Elhadi A. A. Arbab,Elhadi A. A. Arbab,Cosmas M. Muiva,Lucia M. Lepodise,Genene Tessema Mola +5 more
TL;DR: In this paper, a simple co-precipitation method and its physical properties investigated, XRD studies showed distinct monoclinic CuO, cubic NiO and hexagonal wurzite ZnO phases with NiO oxide having the highest volume fraction.
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Highly conductive and transparent Ga-doped ZnO thin films deposited by chemical spray pyrolysis
TL;DR: The structural, morphological and optical properties of undoped and Ga doped ZnO thin films were studied as a function of increasing Ga doping concentration from 0 to 7 at.% as mentioned in this paper.
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Chemical bond approach to optical properties of some flash evaporated Se100−XSbX chalcogenide alloys
Cosmas M. Muiva,Cosmas M. Muiva,T.S. Sathiaraj,T.S. Sathiaraj,Julius M. Mwabora,Julius M. Mwabora +5 more
TL;DR: In this article, the optical properties were investigated from spectrophotometric measurements in the UV-VIS-NIR spectral region using Swanepoel's standard envelope method and related techniques, and the optical band gap energy was evaluated from the Wemple-Didomenico (WDD) single oscillator model and Tauc's extrapolation method in the region where the absorption coefficient, α ≥ 10 4 cm −1.