Electrical and optical properties of vacuum deposited MnPc thin films

K. R. Rajesh () and C. S. Menon

The European Physical Journal B: Condensed Matter and Complex Systems, 2005, vol. 47, issue 2, 171-176

Abstract: Sandwich and planar structures were fabricated using manganese phthalocyanine (MnPc) as active layer and gold (Au) as electrodes by thermal evaporation method. The permittivity ε of MnPc was determined from the dependence of capacitance on film thickness. J-V characteristics of Au/MnPc/Au structure at room temperature were performed. Thermally generated hole concentration p 0 , hole mobility μ p , total trap concentration N t and depth of the trap level were estimated. The activation energies of MnPc films were determined from the Arrhenius plots of ln σ versus 1000/T. The absorption and reflectance spectra of MnPc thin film deposited at room temperature were recorded in the spectral range 300–900 nm. The optical band gap of MnPc thin film was determined from the α 2 versus hν graph. The optical constants n and k were found. The real and imaginary parts of the optical dielectric constant ε 1 and ε 2 were calculated. Copyright EDP Sciences/Società Italiana di Fisica/Springer-Verlag 2005

Date: 2005
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DOI: 10.1140/epjb/e2005-00317-x

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