The potential of dye sensitization of organic photovoltaic devices has been investigated. The photoelectrical properties of such devices have been studied. With the help of spin-coating method, single layer and double layer structures are prepared with the help of both methyl red and crystal violet dye at a time. Methyl red and crystal violet dye are dispersed in polyvinyl alcohol used as an inert polymer binder and polyethylene oxide complexed with LiClO₄ ion salt as a solid electrolyte. Ethylene carbonate and propylene carbonate are used as plasticizers. A layer of this blend is sandwitched between two electrodes, one of which is indium tin oxide (ITO)-coated glass plate and another is Al electrodes. In this study, the use of a C₆₀ layer over the previously prepared blend is done. ITO-coated glass plate and Al electrodes are taken as counter electrodes. Use of C₆₀ molecule over the polymer blend in a heterojunction increased the efficiency of photovoltaic devices. In this type of device, the polymer blend acts as an electron donor to the second layers, whereas C₆₀ plays the role of an electron acceptor.