Search Results - "Echendu, O.K."

The effects of anode material type on the optoelectronic properties of electroplated CdTe thin films and the implications for photovoltaic application by Echendu, O.K., Dejene, B.F., Dharmadasa, I.M.

“…The effects of the type of anode material on the properties of electrodeposited CdTe thin films for photovoltaic application have been studied. Cathodic…”
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Comparative performance of CdS/CdTe thin film solar cells fabricated with electrochemically deposited CdTe from 2-electrode and 3-electrode set-ups by Echendu, O.K., Dejene, B.F., Hone, F.G.

“…[Display omitted] •A comparison of 2-electrode and 3-electrode set-ups for semiconductor growth.•Both electrode systems produce semiconductors with similar…”
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Nonrelativistic solutions of Schrödinger equation and thermodynamic properties with the proposed modified Mobius square plus Eckart potential by Onyenegecha, C.P., Njoku, I.J., Opara, A.I., Echendu, O.K., Omoko, E.N., Eze, F.C., Okereke, C.J., Onyeocha, E., Nwaneho, F.U.

“…We obtain solutions of Schrödinger equation for the modified Mobius square plus Eckart (MMPSE) potential via the formula method. Numerical results are…”
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Electrochemical deposition and characterization of thin-film Cd1-xZnxS for solar cell application: The effect of cathodic deposition voltage by Werta, S.Z., Echendu, O.K., Egbo, K.O., Dejene, F.B.

“…Cd1-xZnxS thin films have been grown by two-electrode electrodeposition method using an electrolytic bath containing cadmium chloride, zinc chloride and sodium…”
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The effect on CdS/CdTe solar cell conversion efficiency of the presence of fluorine in the usual CdCl2 treatment of CdTe by Echendu, O.K., Dharmadasa, I.M.

“…The addition of CdF2 to the CdCl2 solution used in the well-known CdCl2 treatment of CdS/CdTe solar cells has been observed to drastically improve the…”
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The effect of electrolytic solution pH on the properties of electrodeposited CdTe thin films for solar energy application by Yimamu, A.U., Afrassa, M.A., Dejene, F.B., Echendu, O.K., Terblans, J.J., Swart, H.C., Motloung, S.J.

“…Cadmium telluride (CdTe) thin films were synthesized by using a two-electrode electrodeposition method on a conductive glass fluorine-doped tin oxide (FTO)…”
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Scientific complications and controversies noted in the field of CdS/CdTe thin film solar cells and the way forward for further development by Dharmadasa, I. M., Alam, A. E., Ojo, A. A., Echendu, O. K.

“…Cadmium telluride-based solar cell is the most successfully commercialised thin film solar cell today. The laboratory-scale small devices have achieved ~ 22%,…”
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Electrochemical deposition and characterization of ZnOS thin films for photovoltaic and photocatalysis applications by Echendu, O.K., Werta, S.Z., Dejene, F.B., Craciun, V.

“…Electrochemical deposition of zinc oxysulphide (ZnOS) thin films for possible photovoltaic and photocatalysis applications has been carried out using zinc…”
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High short-circuit current density CdTe solar cells using all-electrodeposited semiconductors by Echendu, O.K., Fauzi, F., Weerasinghe, A.R., Dharmadasa, I.M.

“…CdS/CdTe and ZnS/CdTe n–n heterojunction solar cells have been fabricated using all-electrodeposited semiconductors. The best devices show remarkable high…”
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Cathodic deposition voltage-dependent properties of electrodeposited stoichiometric CdSe thin films for solar energy application by Yimamu, A.U., Dejene, B.F., Echendu, O.K., Werta, S.Z., Terblans, J.J., Swart, H.C., Motloung, S.J.

“…[Display omitted] •CdSe thin films were synthesized by using the two-electrode electrodeposition method.•Deposition voltage was optimized for CdSe thin films…”
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Structural, vibrational, optical, morphological and compositional properties of CdS films prepared by a low-cost electrochemical technique by Echendu, O.K., Werta, S.Z., Dejene, F.B., Egbo, K.O.

“…Very dense and uniform thin films of CdS were deposited on fluorine-doped tin oxide (FTO) substrates for thin film semiconductor devices application, such as…”
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Improvement of composition of CdTe thin films during heat treatment in the presence of CdCl2 by Dharmadasa, I. M., Echendu, O. K., Fauzi, F., Abdul-Manaf, N. A., Olusola, O. I., Salim, H. I., Madugu, M. L., Ojo, A. A.

“…CdCl 2 treatment is a crucial step in development of CdS/CdTe solar cells. Although this processing step has been used over a period of three decades, full…”
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Simplified two-electrode electrochemical growth and characterization of Cd1−xZnxS thin films: Influence of electrolytic bath pH by Werta, S.Z., Echendu, O.K., Dejene, F.B.

“…Cd1−xZnxS thin films were prepared from an aqueous electrolytic solution using a simple low-cost two-electrode electrodeposition technique. Effect of pH on…”
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Band gap tailoring of chemically synthesized lead sulfide thin films by in situ Sn doping by Hone, Fekadu Gashaw, Dejene, F.B., Echendu, O.K.

“…In the present report, undoped and tin (Sn)‐doped lead sulfide thin films were synthesized via chemical bath deposition method. The effects of Sn molar…”
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Electrodeposition of CdTe thin films using an acetate precursor for solar energy application: The effect of deposition voltage by Yimamu, A.U., Afrassa, M.A., Dejene, B.F., Echendu, O.K., Terblans, J.J., Swart, H.C., Motloung, S.J.

“…Cadmium Telluride (CdTe) thin films were synthesized using a low-cost two-electrode electrodeposition configuration in potentiostatic mode and from an aqueous…”
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Optimisation of CdTe electrodeposition voltage for development of CdS/CdTe solar cells by Diso, D. G., Fauzi, F., Echendu, O. K., Olusola, O. I., Dharmadasa, I. M.

“…Cadmium telluride (CdTe) thin films have been deposited on glass/conducting glass (FTO) substrates using low-cost two electrode system and aqueous…”
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Characterization of n-Type and p-Type ZnS Thin Layers Grown by an Electrochemical Method by Echendu, O.K., Weerasinghe, A.R., Diso, D.G., Fauzi, F., Dharmadasa, I.M.

“…Electrodeposition of n -type and p -type thin-film layers of ZnS was carried out using a simple two-electrode system and aqueous solutions of ZnCl 2 and (NH 4…”
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Electrochemical Deposition of CdTe Semiconductor Thin Films for Solar Cell Application Using Two-Electrode and Three-Electrode Configurations: A Comparative Study by Dharmadasa, I. M., Oriaku, C. I., Okeoma, K. B., Echendu, O. K.

“…Thin films of CdTe semiconductor were electrochemically deposited using two-electrode and three-electrode configurations in potentiostatic mode for comparison…”
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Theoretical investigation of the viscosity of some liquid metals and alloys by Echendu, O.K., Mbamala, E.C., Anusionwu, B.C.

“…The viscosities of some liquid metals and liquid binary alloys have been determined using the theoretical model developed by Morioka et al. (Z. Metallkd. 93, 4…”
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Thermodynamic studies of the surface and transport properties in Ag-In and Ag-Sb liquid alloys by Anusionwu, B.C., Echendu, O.K.

“…The surface tension, surface concentration, viscosity and mutual diffusion co-efficients of the Ag-In and Ag-Sb liquid alloys have been calculated using…”
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