Investigation of optical and chemical Propertie of poly(3-methylthiophene and Polypyrrole for solar cell fabrication

چکیده مقاله

In this study, we have investigated the optical and chemical properties of thin film layers based on
poly(3-methylthiophene) and polypyrrole through experiment and simulation point of view. Optical
band gap of poly(3-methylthiophene-co-pyrrole) (poly(3-MeT-co-py)) and poly(3-methylthiophene)
(PMeT) were investigated through UV–vis spectroscopy. Electrochemical data were used to estimate
the onset oxidation and reduction potential, energy band diagram and chemical band gap of PMeT and
poly(3-MeT-co-py). The experiments were carried out in a three-electrode cell with ITO as the working
electrode. Influence of different electrodes on PMeT thin film’s energy levels was studied in electrochemical
polymerization. Different thin films by poly(3-methylthiophene) and polypyrrole were utilized in
order to fabricate organic solar cells and their photovoltaic properties were offered. Moreover, an optical
modeling based on thin film matrix formalism has been carried out which investigated absorption
processes in single layer solar cell by PMeT. From the simulation, photons absorbed profiles and energy
dissipation in term of wavelength and distance in depth of cell were derived in active layer.