Chemically Deposited Polypyrrole Film on Conductive Glass for Dye-Sensitized Solar Cell Counter Electrode Application

Abstract

In this research, polypyrrole films were successfully prepared by chemical deposition method. They were then used for dye-sensitized solar cells counter electrodes. Scanning electron microscopy revealed that polypyrrole films have non uniform polymer formation. The amount of polypyrrole (or film thickness) was increased with deposition duration. The highest efficiency of polypyrrole based dye-sensitized solar cell (-5.13%) was achieved for 120 min deposition. However, the performance of polypyrrole based dye-sensitized solar cell above 120 min was decreased with the polymer deposition duration. Electrochemical impedance spectroscopy shows that the superior performance of 120 min polypyrrole solar cell is due to its lower charge-transfer resistance between counter electrode and electrolyte.