THE QUANTUM DOTS SOLAR CELLS BASED-ON DIFFERENT COUNTER ELECTRODES

Abstract

Solar cells based on a mesoporous structure of TiO₂ and the polysulfide redox electrolyte were prepared by direct adsorption of CdS/CdSe/ZnS quantum dots (QDs) light absorbers onto the oxide. Moreover, we also synthesized quantum dots solar cells (QDSSCs) based on different counter electrodes like CuS, Cu₂S, PbS by successive ionic layer adsorption and reaction (SILAR) method and chemical bath deposition (CBD). The performance photovoltaic was about 0.87 % for Cu₂S counter electrode, i.e. higher than other counter electrodes. With this result, CuS, Cu₂S and PbS exhibit several advantages in which they can replace Pt commercial in the future.