Department of Mathematics and Physics
http://ir.tum.ac.ke/handle/123456789/198
Contains patents from this department2024-03-28T12:59:12ZThermal Emmittance and Solar absorptance of CDS Thin Films
http://ir.tum.ac.ke/handle/123456789/7920
Thermal Emmittance and Solar absorptance of CDS Thin Films
Mosiori, Cliff Orori; Kwembur, Isaac Morko; Maera, John
CdS thin films were grown on highly cleaned substrates of Microscope glass slides
using solution deposition technique at different molar concentrations at constant time
and repeated at a fixed molar concentration at for different deposition times. Measurement of the thermal emittance on polished and coated substrates was
determined before and after growth. The average thermal emittance value of polished uncoated sample plate was0.152 with an error of ± 0.013 while an average thermal emittance value of the coated sample was 0.15 ± 0.01. Equally when the average solar absorptance values of the coated sample plate substrate was 0.473 with an error of ± 0.01. Thin film thickness varied from 0.212-0.614 μm with an error of ± 0.01. These outcomes formed the basis for proposing these thin films as appropriate for
photothermal solar energy application
2016-01-01T00:00:00ZEFFECTS OF QUANTUM CONFINEMENTS IN TIN SULPHIDE NANOCRYSTALS PRODUCED BY WET-SOLUTION TECHNIQUE
http://ir.tum.ac.ke/handle/123456789/7918
EFFECTS OF QUANTUM CONFINEMENTS IN TIN SULPHIDE NANOCRYSTALS PRODUCED BY WET-SOLUTION TECHNIQUE
MOSIORI, CLIFF ORORI; MAERA, JOHN
Abstract In thin film nano-crystals studies, electron energy levels are known not continuous
in the bulk thin films but are rather discrete (finite density of states) because of confinement
of their electron wave functions to the physically dimensions of the particles. This
phenomenon is called Quantum confinement and therefore nano-crystals are also referred
to Quantum dots.
2016-06-01T00:00:00Z