Nanocomposite Dye Sensitized Solar Cell (DSSC) Based on Titanium Oxide/Tungsten Oxide Photoelectrode
It is well known that polyaniline (PANI) is one of the most promising conducting polymers. Due to its high electrochemical activity, environmental stability and low cost, PANI materials have been employed to fabricate efficient counter electrode in DSSCs .
Recently, there is a large interest to incorporate carbon nanotubes (CNTs) into organic solar cells because of the unique electrical properties of CNTs. For example, CNTs were used as electron acceptors in the photoactive layer of the solar cells . Also, CNTs were used as transparent anodes in order to replace the prevailed wildly used indium tin oxide (ITO) .
In this work nanomaterials for photo- and counter-electrodes are synthesized and investigated. The morphological structures of WO3 nanorods deposited onto TiO2 nanoparticles and PANI-CNTs. The electro-catalytic activity of the counter electrode is investigated using cyclic voltammetry technique.
The CNTs blended PANI base counter electrode and ruthenium dye sensitized WO3/TiO2 based photo-electrode were assembled to form DSSC. The electrical properties of the fabricated solar cells were investigated by measuring the current density voltage (J–V) under both darkness and illumination conditions. It was found that there is a significant improvement in the performance of DSSC used WO3 nanorods.
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