Kassou, S. and El-Mrabet, R. and Kaiba, A. and Guionneau, P. and Belaaraj, A. (2016) Combined experimental and density functional theory studies of an organic-inorganic hybrid perovskite. Physical Chemistry Chemical Physics, 18 (14). pp. 9431-9436.

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Abstract

Single crystals of C6H5-C2H4-NH32ZnCl4 were obtained by slow evaporation at room temperature. Single-Crystal X-Ray Diffraction (SCXRD), Differential Scanning Calorimetry (DSC), Thermogravimetric Analysis (TGA) and UV-Visible spectroscopy were used to characterize the crystal structure, and thermal and optical properties, respectively. At 293 K, PEA-ZnCl4 crystallizes in a monoclinic unit-cell in the P21/c space group a = 7.449(2) Å, b = 24.670(3) Å, c = 11.187(2) Å and β = 91.762(5)°, V = 2054.8(2) Å3 and Z = 4. The DSC and TGA analyses show respectively the presence of two first order reversible phase transitions and a sample thermal stability below 541 K. The optical study reveals that the compound undergoes a direct optical transition and an energy gap about of Eg = 4.46 eV. In parallel, ab initio DFT calculations are performed to study the electronic band structure, to examine electronic density and to calculate the gap energy value. The calculated values are in good agreement with the experimental data. © the Owner Societies 2016.

Item Type: Article
Subjects: Chemistry
Divisions: SCIENTIFIC PRODUCTION > Chemistry
Depositing User: Administrateur Eprints Administrateur Eprints
Last Modified: 31 Jan 2020 15:45
URI: http://eprints.umi.ac.ma/id/eprint/1887

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