- UPSpace Home
- →
- Natural and Agricultural Sciences
- →
- Browsing Natural and Agricultural Sciences by Supervisor
JavaScript is disabled for your browser. Some features of this site may not work without it.
Browsing Natural and Agricultural Sciences by Supervisor "Diale, M. (Mmantsae Moche)"
Now showing items 1-20 of 20
-
(University of Pretoria, 2014)Silicon Carbide is a wide bandgap semiconductor with excellent physical and opto-electrical properties. Among these excellent properties are its radiation hardness, high temperature operation and high electric field ...
-
(University of Pretoria, 2019)Ions with different energies have been used to modify the properties of semiconductors. In particular, these modifications have included altering the electrical properties of semiconductors. The ion-solid interactions ...
-
(University of Pretoria, 2017)First discovered by E.T. Hall in 1879 [1], the Hall Effect is a phenomena that explains the behaviour of a material placed in a magnetic field and a current is allowed to flow through the material, producing an electric ...
-
(University of Pretoria, 2016)Gallium arsenide (GaAs) technology leads the implementation of high frequency devices with superior performance. A vast number of optoelectronic applications are based on the material owing to its direct and wide bandgap. ...
-
(University of Pretoria, 2019)Silicon carbide has become an important material in the implementation of next generation photonics. It harbors the silicon vacancy (VSi) which can be transformed to a carbon antisite-vacancy pair (CSiVC) defect through ...
-
(University of Pretoria, 2015)Metal deposition on Si has effects that may be detrimental to device operation such as diffusion, Fermi level pinning and silicide formation. Silicide formation is dependent on type of metal and temperature at which ...
-
(University of Pretoria, 2016)The electrical properties of ZnO and Schottky contacts to ZnO have been investigated using different techniques. Good rectifying Schottky contact has been fabricated on ZnO, after treating the samples with boiling hydrogen ...
-
(University of Pretoria, 2021)In this dissertation, α-Fe2O3 thin film deposition techniques were first evaluated to understand their effects on the structural, optical and photoelectrochemical (PEC) properties of the films. α-Fe2O3 films were deposited ...
-
(University of Pretoria, 2020-01)Photoelectrochemical (PEC) water splitting, using sunlight and appropriate semiconductors to produce hydrogen (H2) fuel, is a promising route to solve both the production of clean H2 fuel and storage for solar energy. Owing ...
-
(University of Pretoria, 2022)Perovskites of cesium lead halide (CsPbX3, X = Cl, Br, I) have received a lot of attention due to their relative stability in comparison to their organic-inorganic counterparts. This study synthesized a thin film of ...
-
(University of Pretoria, 2022)In this work, the processing parameters of preparing dip coated CuO films which includes the withdrawal rate, film thickness and annealing temperature were optimized for photoelectrochemical (PEC) water splitting. The CuO ...
-
(University of Pretoria, 2020-10)In this thesis, we have developed a reproducible, safe, and scalable sequential thermal vapour deposition (STVD) method for the growth of quality 3D halide perovskite (HaP) thin films. High-quality methylammonium lead ...
-
(University of Pretoria, 2022-12)In this study, the influence of coating techniques and layering of hematite (α-Fe2O3) thin films were studied. Two colloidal-based coating techniques namely dip coating and thermal spray pyrolysis were used to synthesize ...
-
(University of Pretoria, 2013-05-27)Recent advances in growth techniques have lead to the production of high quality GaN and this has played a vital role in the improvement of GaN based devices. A number of device types can be produced from GaN. Spectrally ...
-
(University of Pretoria, 2022)Gold (Au) nanospheres, nanorods and nanoprisms were synthesized using the seed-mediated growth method. The structural, optical, and morphological properties of Au nanostructures were explored. Transmission electron microscope ...
-
(University of Pretoria, 2020)The Inverse Temperature Crystallization (ITC) and seed-induced method were used to grow high-quality cubic samples within hours using a 1M solution of methylammonium lead bromide (MAPbBr3) samples. The current-voltage (I-V) ...
-
(University of Pretoria, 2022-03)In this study, we report on the synthesis and characterization of titanium dioxide thin film prepared via the spray pyrolysis technique. X-ray diffractograms confirmed a tetragonal crystal structure with an average crystallite ...
-
(2022-02-25)The study aims to synthesize plasmonic nanoparticles (NPs) using the chemical reduction method and incorporate them into poly(3,4-ethylene dioxythiophene): poly(styrene sulfonate) (PEDOT: PSS) for light scattering. The ...
-
Synthesis and characterization of nanostructured hematite for photoelectrochemical water splitting (University of Pretoria, 2021)This study aims to synthesize nanostructured hematite films using spray pyrolysis at different deposition temperatures. L-arginine was used to transform the irregular shaped nanoparticles to uniform nanospheres by chemical ...
-
(University of Pretoria, 2016)The fundamental mechanisms involved in photosynthesis provide an opportunity to study physical principles that span over both classical and quantum scales. A better understanding of these mechanisms will benefit the ...
Now showing items 1-20 of 20