Eur. Phys. J. B 47, 171-176 (2005)
https://doi.org/10.1140/epjb/e2005-00317-x

Electrical and optical properties of vacuum deposited MnPc thin films

School of Pure and Applied Physics, Mahatma Gandhi University, Kottayam-686560, Kerala, India

Corresponding author: ^a rajthinfilms@yahoo.co.in

Received: 24 February 2005
Revised: 22 May 2005
Published online: 11 October 2005

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 p₀, hole mobility , 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 versus graph. The optical constants n and k were found. The real and imaginary parts of the optical dielectric constant and were calculated.