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      https://www.ias.ac.in/article/fulltext/boms/044/0113

    • Keywords

       

      Organic–inorganic hybrid perovskite; optical; impedance spectroscopy; electrical conductivity; thermal properties.

    • Abstract

       

      The two-dimensional (2D) metal halide hybrid (C$_2$H$_5$NH$_3$)$_2$MnCl$_4$ has been grown by slow evaporation technique at room temperature. The phase-purity and morphology were confirmed using powder X-ray diffraction, scanning electron microscope and high-resolution transmission electron microscopy studies. Optical properties like reflectance and bandgap were determined from UV–visible spectrum. The dielectric properties of the studied compound have been investigated using impedance spectroscopy as a function of frequency for different temperatures from 1 Hz to 1 MHz between 353 and 453 K. The real and imaginary components Z'and Z"of impedance are fitted using an equivalent circuit model, consisted of a series combination of parallel resistance-constant phase elements of grain (Rg||CPEg), resistance-capacitance of grain boundary (Rgb||Cgb) and resistance-capacitance of electrode (Rel||Cel), which reveal the existence of distribution of relaxation times and thermally activated non-Debye-like relaxation. The frequency-dependent AC conductivity is well described by Jonscher’s universal power law, which follows the Arrhenuis relation. The aboveresults indicate the semiconductor behaviour with wide bandgap energy.

    • Author Affiliations

       

      M ETTAKNI1 S KASSOU2 S GHYATI3 M OUAAKA1 S YOUSFI3 M KHECHOUBI1 L BIH3 H BIH4 A KHMOU1

      1. Physics Department, Faculty of Science, Materials and Renewable Energies Team, LP2MS Laboratory, B.P. 11201, Meknes 50000, Morocco
      2. Department of Physics, R&D Center for Membrane Technology and Center for Nanotechnology, Chung Yuan Christian University, Taoyuan 32023, Taiwan, ROC
      3. Departement de materiaux et procedes, ENSAM Meknes, Universite Moulay Ismail, Meknes 50000, Morocco
      4. Process Engineering, Computer Science and Mathematics Laboratory (LIPIM), National School of Applied Engineering- Khouribga, Sultan Moulay Slimane University, Beni Mellal 23000, Morocco
    • Dates

       
  • Bulletin of Materials Science | News

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