Publications Scientifiques

Permanent URI for this communityhttps://dspace.univ-boumerdes.dz/handle/123456789/10

Browse

Filters

2016 - 20203

Settings

Author: search.filters.author.Toubane, MahdiaSubject: search.filters.subject.AFM

Search Results

Now showing 1 - 3 of 3
  • No Thumbnail Available
    Item
    Study of Temperature and Concentration Effects for CZTS Layers using Spray Pyrolysis
    (IEEE, 2017) Haouanoh, Djedjiga; TalaIghil, Razika Zaïr; Toubane, Mahdia; Bensouici, Fayçal; Zair, Razika
    In this study, Cu 2 ZnSnS 4 (CZTS) layers were successfully deposited onto glass and silicon substrates by spray pyrolysis technique. The surface morphology, chemical, crystal phase structure and optical properties of (CZTS) thin films were characterized using a scanning electron microscopy (SEM), atomic force microscopy (AFM), X-ray diffractometer (XRD) and UV-visible spectrophotometer. Substrate temperatures and concentrations of precursor effects parameters were investigated. X-ray diffraction showed the formation of kesterite phase. SEM images revealed uniform, smooth, porous, and compact and densely packed morphology. A wide variation in the value of the band gap is observed when we have changed both parameters temperature and concentration.
  • No Thumbnail Available
    Item
    Influence of Deposition Time on the CdS Thin Films Prepared by a Chemical Bath Deposition (CBD)
    (2020) Haouanoh, D.; Tala-Ighil, Razika; Bensouici, F.; Toubane, Mahdia
    Cadmium sulfide thin layers are frequently used in photovoltaic, especially in the realization of Cu2ZnSnS4 (CZTS) based solar cells as buffer layer. In this work, cadmium sulphide (CdS) thin films have been carried out by using chemical bath deposition (CBD) method. They were deposited onto glass substrates from chemical bath containing cadmium sulfate, thiourea and ammonia at pH = 12. The temperature of the bath was fixed at 60 ºC, and under 150 RPM stirring, the time deposition was varied (10 mn–40 mn). X-ray diffraction revealed the cubic and hexagonal structures formation with secondary phase CdO. AFM images of CdS thin films show that the substrate is covered with granular structures of different size, the root mean square (Rms) value prepared at different time (10 mn, 20 mn, 30 mn and 40 mn) are, 26.05, 25.08, 19.93 and 38.55 nm. High transmission is obtained in the visible and near infra-red.
  • No Thumbnail Available
    Item
    Structural, optical and photocatalytic properties of ZnO nanorods : effect of aging time and number of layers
    (Elsevier, 2016) Toubane, Mahdia; Tala-Ighil, Razika; Bensouici, F.