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Now showing items 41-50 of 62
Hybrid lead halide perovskite thin films and solar cells by chemical vapour deposition
(University of the Western Cape, 2021)
The organic-inorganic hybrid perovskites such as methyl ammonium lead iodide (MAPbI3) or mixed halide MAPbI3-xClx (x is usually very small) have emerged as an interesting class of semiconductor materials for their application ...
Silicon nanowires by metal-assisted chemical etching and its incorporation into hybrid solar cells
(University of Western Cape, 2021)
The rapid increase in global energy demand in recent decades coupled with the adverse environmental impact of conventional fuels has led to a high demand for alternative energy sources that are sustainable and efficient. ...
Variability and interannual trends in the climatology of radon-222 at two Southern Hemisphere coastal baseline sites
(University of the Western Cape, 2021)
This thesis characterises and discusses two continuous coastal Southern Hemispheric (SH) atmospheric radon (222Rn) signals. Large-scale atmospheric circulation patterns are important components of the climate system ...
Application of vertically aligned arrays of metal-oxide nanowires in heterojunction photovoltaics
(University of the Western Cape, 2020)
The commercial need to improve the performance of low-cost organic solar cells has led to the idea for this research. The study discusses the synthesis of one dimensional TiO2 and ZnO nanowire arrays synthesised using a ...
Probing large-scale structure with the SKAO and other cosmological surveys
(University of the Western Cape, 2022)
In recent history there have been several advances in cosmology, which has significantly
shaped our understanding of the Universe. The current leading theory is called ΛCDM,
which can successfully model the expansion of ...
A multi-wavelength study of powerful high redshift radio galaxies
(2021)
We present a new sample of distant powerful radio galaxies, in order to study their
host-galaxy properties and provide targets for future observations of Hi absorption
with new radio telescopes. We cross-match the Sydney ...
New collective structures in the Z=76 stable odd neutron nucleus, 187Os
(University of Western Cape, 2021)
Low- and medium-spin bands of 187Os have been studied using the AFRODITE array,
following the 186W(4He,3n)187Os reaction at a beam energy of 37 MeV. The measurements
of
coincidences, angular distribution ratios ...
Proton conductivity stability studies by modelling
(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 ...
Probing galaxy evolution below the noise threshold with radio observations
(University of the Western Cape, 2020)
The faint radio population consisting of star forming galaxies (SFG) and radio-quiet
active galactic nuclei (AGN) is important in the study of galaxy evolution. However,
the bulk of the faint population is below the ...
The effects on student knowledge and engagement when using a culturally responsive framework to teach ASTR 101
(University of the Western Cape, 2020)
The U.S. has a problem: it is not effectively utilizing all the bright young minds available to its science & engineering workforce. In 2012 the President’s Council of Advisors on Science and Technology (PCAST) reported ...