A new electrochemical approach to fabricate polymer solar cell has been developed. Electropolymerization of 2,2'-bithiophene was done on top of the electrodeposited p-doped PEDOT layer. Fullerene was deposited as a third layer after initiating n-doping of the polymers. Composition and oxidation states of the polymers were monitored by UV-Vis-NIR spectroscopy. Morphological changes were followed with Atomic Force Microscopy (ATM) revealing rough nanostructures of the layers. The composition and performance of the solar cells were compared to the cells fabricated by using conventional spin-coating technique. Photoresponse with the maximum V-oc of 0.47 V and the highest J(sc) of 0.55 mA/cm(2) was measured. (C) 2011 Elsevier Ltd. All rights reserved.