Browsing by Author "Ojo, I.A.O"

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    Optical characterization of pyrolytically deposited ZnxCd1−xS thin films
    ( Optical Materials, 1998-09) Adedeji, A.U; Ojo, I.A.O; Djebah, A
    The precursor bis-(morpholinodithioato-s,s′)–Cd–Zn was prepared and the thin films of ZnxCd1−xS deposited on sodalime glass substrate. A direct optical energy gap of 2.63 eV was obtained from the analysis of the absorption spectrum. The photoluminescence spectrum shows shift in the energy of the primary emission peaks as a function of the excitation energy. The shift was explained as due to the quantum size effect in nanometer thick polycrystalline films. Energy Dispersive X-ray Florescence (EDXRF) confirms the elemental composition of both the precursor and the films
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    Preparation and optical characterization of MOCVD ZnCdInS thin films
    (2000-08-04) Adedeji, A.V.; Ojo, I.A.O; Eleruja, Marcus Adebola; Djebah, A.
    The precursor, bis-(morpholinodithiocarbamate-s,s′)-Cd–Zn–In has been prepared and pyrolyzed to obtain ZnCdInS thin films. The results of the compositional studies carried out using RBS and EDXRF were found to be complementary. An optical band gap of 2.53 eV was obtained from both absorbance and PL measurements