Abstract:
This study was focused on the electrical conductivity for the combination of polypyrrole
thin films and chlorophyll thin films by layered on indium tin oxide (ITO) substrate as p
n hetero-junction solar cell. The polypyrrole thin films was deposited on the ITO
substrate by using the Electrochemical Impedance Spectroscopy instrument (EIS) and
chlorophyll thin films was deposited on the polypyrrole by using spin coater machine.
Chlo+ PPY/ITO thin films were prepared with 15 difference thicknesses and each sample
was prepared with 3 duplicates. The current and voltage of the thin films were measured
by using four point probes under dark and different light intensity. The result of this work
showed the polypyrrole thin film successful layered by chlorophyll on the ITO substrate
with different thicknesses. 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 the polypyrrole thicknesses but
decreased with increasing chlorophyll thicknesses. The electrical conductivity under light
intensity was increased with increasing the light intensity. The electrical conductivity
under light was decreased with increasing CHLO and Polypyrrole thicknesses. As a
conclusion, the thinnest PPY thin films with thinnest CHLO thin films are suitable
combination to increase the electrical conductivity which is 0.152 Sm· 1.
