Studies on structural and optical properties of thermally evaporated nanocrystalline thin films of meso-Tetraphenylporphyrin manganese(III) chloride
L.M.D.El-deen; Hassan, Attia; A.M.A. El-Barry; El-Shazly, EAA;
Abstract
Thin films of meso-Tetraphenylporphyrin manganese(III) chloride (MnTPPCl) were prepared by conventional
thermal deposition technique, under vacuum (10−4 Pa), on glass and quartz substrates. X-ray diffraction (XRD)
technique, Fourier-transform Infrared (FT-IR) technique and scanning electron microscope (SEM) were used to
investigate crystalline and molecular structures, and morphology of MnTPPCl in powder form, and the as-deposited
thin films. Absorption spectra of thin films were recorded in the wavelength range from 200 to 2500 nm
by using Spectrophotometric measurements. Seven distinct absorptions were detected in MnTPPCl thin films in
the range between 1.9 and 5 eV. The type of the optical transition and optical energy gap were estimated from
the analysis of the absorption coefficient data. In the present work, dispersion parameters: oscillator energy,
dispersion energy, optical dielectric constant at higher frequency, and Lattice dielectric constant were calculated
as well as many other optical parameters. Nonlinear absorption coefficient spectrum of MnTPPCl thin film was
obtained utilizing a linear optical parameter. The cyclic voltammetry measurements were employed to calculate
HOMO-LUMO gap in the voltage range from −2 to +2V.
thermal deposition technique, under vacuum (10−4 Pa), on glass and quartz substrates. X-ray diffraction (XRD)
technique, Fourier-transform Infrared (FT-IR) technique and scanning electron microscope (SEM) were used to
investigate crystalline and molecular structures, and morphology of MnTPPCl in powder form, and the as-deposited
thin films. Absorption spectra of thin films were recorded in the wavelength range from 200 to 2500 nm
by using Spectrophotometric measurements. Seven distinct absorptions were detected in MnTPPCl thin films in
the range between 1.9 and 5 eV. The type of the optical transition and optical energy gap were estimated from
the analysis of the absorption coefficient data. In the present work, dispersion parameters: oscillator energy,
dispersion energy, optical dielectric constant at higher frequency, and Lattice dielectric constant were calculated
as well as many other optical parameters. Nonlinear absorption coefficient spectrum of MnTPPCl thin film was
obtained utilizing a linear optical parameter. The cyclic voltammetry measurements were employed to calculate
HOMO-LUMO gap in the voltage range from −2 to +2V.
Other data
Title | Studies on structural and optical properties of thermally evaporated nanocrystalline thin films of meso-Tetraphenylporphyrin manganese(III) chloride | Authors | L.M.D.El-deen ; Hassan, Attia ; A.M.A. El-Barry; El-Shazly, EAA | Keywords | MnTPPCl;Thin films;Optical properties;Structural properties;Cyclic voltammetry | Issue Date | 20-Mar-2018 | Publisher | elsevier | Journal | Journal of Luminescence | Volume | 199 | Start page | 391 | End page | 399 | ISSN | 00222313 | DOI | 10.1016/j.jlumin.2018.03.036 |
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