Browsing Department of Physics and Astronomy by Author "Arendse, Christopher"
Now showing items 1-10 of 10
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Carbon, magnesium implantation and proton irradiation on pulsed laser deposited thermochromic thin film of VO2
Mabakachaba, Boitumelo Mafalo (University of Western Cape, 2020)When the spacecrafts orbit in space, it is subjected to significant thermal cycling variation. Thermal regulation of the spacecraft temperature is required to ensure a good operation of the small crafts such as CubeSats ... -
Hot-wire chemical vapor deposition of silicon nitride thin films
Adams, Abdulghaaliq (2013)Amorphous silicon nitride (a-SiN:H) thin films has a multitude of applications, stemming from the tunability of the material properties. Plasma enhanced chemical vapour deposition (PECVD) is the industrial workhorse for ... -
Optical modeling of amorphous and metal induced crystallized silicon with an effective medium approximation
Muller, Theophillus Frederic George (University of the Western Cape, 2009)In this thesis we report on the metal-mediated-thermally induced changes of the structural and optical properties of hydrogenated amorphous silicon deposited by hot-wire CVD, where aluminium and nickel were used to induce ... -
Optical properties of annealed hydrogenated amorphous silicon nitride (a-SiNx:H) thin films for photovoltaic application
Jacobs, Sulaiman (2013)Technological advancement has created a market for large area electronics such as solar cells and thin film transistors (TFT’s). Such devices now play an important role in modern society. Various types of conducting, ... -
Proton conductivity stability studies by modelling
Square, Lynndle Caroline (University of the Western Cape, 2016)In this thesis, some of the challenges experienced by high temperature polymer electrolyte membrane fuel cells are explored through material modelling techniques. A very important aspect for a fuel cell is that it should ... -
Spectrally selective AlXOY/Pt/AlXOY solar absorber coatings for high temprature solar-thermal applications
Nuru, Zebib Yenus (University of Western Cape, 2014)The limited supply of fossil hydrocarbon resources and the negative impact of CO2 emission on the global environment dictate the increasing usage of renewable energy sources. Concentrating solar power (CSP) systems are the ... -
Structural and gas sensing properties of TiO₂-based (Sn, Mg) nano-structures induced by mechanical milling and annealing
Bolokang, Amogelang Sylvester (University of the Western Cape, 2015)Titanium oxynitride has attracted research interest for the fact that it is a bioactive non-toxic material. It is suitable for surface coating of biomaterials and in other applications such as anti-reflective coatings, ... -
Structure property relationship and thermal stability of organic photovoltaic cells
Motaung, David Edmond (University of the Western Cape, 2010)In this thesis, regioregularpoly( 3-hexylthiophene) (rr-P3HT) polymer was used as a light absorption and electron donating material, while the C60 fullerene and its derivative [6,6]-phenyl C61-butyric acid methyl ester ... -
Synthesis of bimetallic immiscible alloy nanoparticles through green and gamma radiolysis approaches for environmental remediation applications
Noukelag, Sandrine Kamdoum (University of the Western Cape, 2022)The synthesis of bimetallic immiscible alloy nanoparticles (NPs) using versatile routes, is a major concern since physio-chemical methods are not environmentally benign. Breaking down the immiscibility would generate NPs ... -
Tin Catalyst preparation for Silicon Nanowire synthesis
Modiba, Fortunate Mofao (University of the Western Cape, 2018)Solar cells offer SA an additional energy source. While Si cells are abundantly available they are not at an optimal efficiency and the cost is still high. One technology that can enhance their performance is SiNW. ...