Poly(3,4-ethylenedioxythiophene):poly(styrene sulfonic acid (PEDOT:PSS) has been widely used as hole collector in
organic solar cells. We report a study of the PEDOT:PSS quality grade on the current voltage characteristics of a planar
heterojunction type photovoltaic cells made of discotic molecules. Electroabsorption (EA) studies were performed on
these components in order to understand the correlation between electrode materials and Voc. From the experimental
results it can be shown a high open circuit voltage of 1.5 V<sub>oc</sub>.