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.
Volume 45, 2022
Continuous Article Publishing mode
Prof. Subi Jacob George — Jawaharlal Nehru Centre for Advanced Scientific Research, Jakkur, Bengaluru
Chemical Sciences 2020
Prof. Surajit Dhara — School of Physics, University of Hyderabad, Hyderabad
Physical Sciences 2020
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