In recent years, there has been considerable interest in the fabrication of photovoltaic devices using polymeric materials. Polyaniline and its composites with other polymers are promising candidates for industrial application of conducting polymers. In this study the photoelectrochemical behaviour of the novel conductive polyanilinecopoly( butyl acrylate/vinyl acetate), (PAn-poly(BuA/VAc)), composite has been investigated using linear sweep voltammetry (LSV) measurements. PAn-copoly(BuA/VAc)) films, containing 40% polyaniline, were sprayed on indium-doped tin-oxide (ITO) coated flexible plastic sheets, as working electrode, using a simple spraying method; a Pt coated ITO coated glass was used as counter electrode and the electrolyte as a liquid electrolyte containing I3 -/I- redox couple sandwiched between them. The photovoltaic parameters, including energy conversion efficiency (ECE%), fill factor (FF), open circuit voltage (Voc), and short circuit current (Isc), were obtained from current-voltage (I-V) curves. The cells were prepared using different composite film thicknesses from 10 to 40 μm. The best energy conversion efficiency (ECE%) was obtained about 0.115% for a cell prepared with composite film thickness of 30 μm for which Voc = -140 mV, Isc =22 μAcm-2 and FF= 0.22 were obtained. The effect of composite film thickness and illumination time on photovoltages and photocurrents were investigated. It was observed that the photovoltages and photocurrents reached a maximum value at the 20 th minute.
کلید واژگان :photoelectrochemical cells; polyaniline-copoly(butyl acrylate/vinyl acetate); conductive polymers; photovoltaic.
ارزش ریالی : 600000 ریال
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