Integration of Reduced Graphene Oxide in Platinum-Free Counter Electrode of Dye-Sensitized Solar Cell

Abstract

Dye-sensitized solar cells (DSSCs) is a part of the third-generation family which have been developed under substantial research for almost three decades due to their low-cost fabrication, low toxicity, and can be manufactured on the flexible substrate. However, the challenge for the improvement of current DSSC is still opened, especially in the scope of efficiency, stability, and platinum (Pt)-free counter electrode. In this work, the incorporation of solution-processed rGO as a replacement for the Pt counter electrode DSSC is demonstrated. The rGO solutions with three different concentrations (1, 3, and 5 wt%) are utilized. The highest power conversion efficiency (PCE) of about 0.1 % is displayed by 5 wt% rGO solution based devices. The results reported in this work exhibited the high potential of solution-processed rGO as an efficient alternative material in the counter electrode of DSSC.