Electrical conductivity of chlorophyll with polypyrrole thin film as solar cell

Abstract

This study was focused on the electrical conductivity for the combination of polypyrrole and chlorophyll thin films on indium tin oxide (ITO) substrate in the bulk heterojunction solar cell. The combination of polypyrrole and chlorophyll thin films with ratio 1:1, 1:5, 1:10, 5:1 and 10: 1 was deposited on the ITO substrate by using the Langmuir Blodgett with different layers. The current and voltage of the thin films were measured by using four point probes under dark and different light intensity which 10, 30, 50, 80 and 100 wm· 2 • The result of this work showed the combination of polypyrrole and chlorophyll thin film in different ratio successful layered on the ITO substrate with different layers. The electrical conductivity under dark was measured by using four point probes. Four point probes with pyronometer and data logger was used to measure the electrical conductivity under different intensity of light. The electrical conductivity under dark was increased with the increasing number of layers combination of polypyrrole and chlorophyll. The electrical conductivity under different light intensity was increased with increasing the light intensity. The electrical conductivity under different intensity of light was increase with increasing the combination polypyrrole and chlorophyll with different ratios. As a conclusion, the 1: 10 layers of polypyrrole and chlorophyll thin film thin films are suitable combination to increase the electrical conductivity which is 0.2 sm· 1 at ratio 15 layers.