DEPARTMENT OF ELECTRICAL AND ELECTRONIC ENGINEERING
Permanent URI for this communityhttps://repository.ui.edu.ng/handle/123456789/478
Browse
4 results
Search Results
Item Post-graduate experience(1998) Fakolujo, O. A.Item Cadmium chloride thin films: hydration-dehydration(Elsevier Sequoia, 1987) Green, M.; Fakolujo, O. A.Item Photovoltaic characteristics of thin films of Cu2SnS3(Elsevier, 1987) Kuku, T. A.; Fakolujo, O. A.We report for the first time the optical absorbtion and photovoltaic characteristics of thin films of Cu2SnS3.Films obtained by the direct evaporation of the synthesized compound were observed to be deficient in copper, while those grown in an atmosphere of copper vapour were observed to be more stoichiometric. Both sets of films are characterised by indirect and direct absorption edge propoerties. The indirect absorption edges are at 1.065 and 1.510 eV, while the direct band edges are at 1.658 and 1.770 eV for the copper deficient and stoichiometric films respectively. The stoichiometric film is characteried by p-type semiconducting properties while a Schottky type solar cell developed from it is observed to have potential photovoltaic characteristicsItem Electron beam decomposition of CdCl2(American Institute of Physics., 1984) Green, M.; Aidinis, C. J.; Fakolujo, O. A.The e-beam stimulated reaction, CdCl2 (s)----Cd(s) + 2Cl(g), has been studied in cadmium chloride thin films between 303 and 483K using 2-keV electrons. The dose required to make 90-mm-deep holes at 483K is 3 X10-3 Ccm-2. Extrapolated dosing levels of ~6X10-5 C cm-2 are expected. The use of CdCl2 as a positive-type electron resist in a new scheme is proposed. A working model, useful for considering the e-beam stimilated decomposition energetics and mechanism, is briefly discussed.