Enhanced light absorption and charge recombination control in quantum dot sensitized solar cells using copper and manganese doped cadmium sulfide quantum dots

摘要

In this work, photovoltaic devices with CdSe QDs-photoanodes doped Cu and Mn metals using the Successive ionic layer adsorption and reaction method for high-efficiency performance. Here, the molar dopant of Cu was studied from 0% to 5%, while Mn molar was changed between 0% and 40% to optimize conditional experiment. This result shows an increase of current density in both CdSe doped on Cu and Mn as a result of the enhancing light absorption and reducing recombination when a ZnS layer was used as passivation. In fact, a high 4.24% of efficiency for CdSe doped on Cu and 3.9% of efficiency for CdSe doped on Mn were archived comparing with pure CdSe QDs.