http://ir.tum.ac.ke/handle/123456789/198 Contains patents from this department 2026-06-13T18:41:21Z 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 2016-01-01T00:00:00Z 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