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The investigation of electrodeposited Cu_2O/ITO layers by chronocoulometry process:effect of electrical potential

Journal of Semiconductors 2016年第10期37卷 25-31页

作者： D.mohra m.Benhaliliba m.Serin m.r.khelladi H.Lahmar A.Azizi material Technology Department Physics Faculty USTO-MB University Yildiz Technical University Davutpasa Campus Faculty of Arts & Science Department of PhysicsSolid-state Physics 1014 34220 Esenler Laboratoire de Chimie Ingenierie Moleculaire et Nanostructures Universite Ferhat Abbas-Setif 1

The thin films of Cu2O are deposited by electrodeposition technique onto indium tin oxide（ITO）-coated glass substrate at different potentials. The precursor is an aqueous solution which contains respectively 0.05 m of CuSO4 and citric acid at kept temperature of 60℃ and the applied potential varies within the {-0：4 V,-0：7 V}SCE range. Based on the chronocoulometry（CC） process, the electrochemical, structural and optical parameters are determined. We measured the current as function of potential within the {-0：4 V,-0：7 V} range and the higher current is found to be within the {-0：7 V,-0：3 V} band. The grain sizes are of 12.12 nm and 35.47 nm according to（110） and（221） orientations respectively. The high textural coefficient of 0.943 is recorded for the potential -0：7 *** transmittance of 72.25 %, within the visible band, is obtained for the as-grown layer at -0：4 V and the band gap is found to be 2.2 e V for the electrodeposition potential of -0：7 V.

关键词： Cu2O films chronocoulometry electrodeposition ITO substrate voltammogram cathodic potential

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Experimental study on the effects of big particles physical characteristics on the hydraulic transport inside a horizontal pipe

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Chinese Journal of Chemical Engineering 2016年第2期24卷 317-322页

作者： Salah Zouaoui Hassane Djebouri Kamal mohammedi Sofiane khelladi Aomar Ait Aidelr LmSE Laboratory Mouloud Mammeri University of Tizi-OuzouP.O.Box 17 RPI 5000Algeria LEmI Laboratory mESO M'Hamed Bougara University of Boumerdes35000Algeria DynFluid Laboratory Arts et Metiers Paris Tech151 boulevard de PHOpital75013 ParisFrance

This paper presents an experimental study of the physical characteristic effects of large particles on hydraulic transport in a horizontal *** particles are spherical and are large with respect to the diameter of the pipe(8%,10%,16% and 25%).Experiments were done to test the important parameters in solid transport(pressure,velocity,etc.).As a result,the relationship between the pressure gradient forces and the mixture velocity was substantially different from the pure liquid ***,in a single-phase flow a monotonous behavior of the pressure drop curve is observed,and the curve of the solid particle flow attains its minimum at the critical *** regimes are characterized with differential pressure measurements and visualizations.

关键词： Solid transport Two-phase flow Hydraulic gradient Flow regime

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