The performance of ruthenium based dye sensitized solar cells in the presence of graphene

Abstract

In this paper, we evaluated graphene effect on the performance of ruthenium based dye‐sensitized solar cells. Two groups of photo‐electrodes were investigated in this study. Various weight percentages of graphene were added only into blocking layer for the first group and into blocking layer, TiO2 paste, and ruthenium‐based dye for the second group samples. The graphene loading clearly influenced on some basic parameters such as conversion and charge collection efficiencies, diffusion coefficient, relaxation time, etc. We showed that loading graphene up to 0.33 %wt increases the efficiency of our samples. Furthermore, we also studied the variation of Hall carrier concentration and mobility for the graphene loaded electrodes. We demonstrated that graphene sheets increases carrier concentration, mobility and the performance of dye sensitized solar cell.

Recent Progress of Graphene-Based Photoelectrode Materials for Dye-Sensitized Solar Cells

“…Esmaeili and Gaznagi tried to add graphene in those traditional sensitizers to improve efficiency [162]. They made two samples for the experiment.…”