Abstract
Dye-sensitized solar cells (DSSCs) belong to the third-generation photovoltaic technology that has achieved a power conversion efficiency (PCE) of over 14% and has great potential for industrial applications. Among the DSSC components, the counterelectrode (CE) is of great importance. Graphene (G)-based nanomaterials have been recently employed as CEs in DSSCs, owing to their excellent specific properties (high conductivity, exceptional electrocatalytic activity, great anticorrosion resistance, and very large surface area) that can partially or totally fulfill all the CE requirements. This chapter presents an overview of the available G-based materials used as CEs. It focuses on the PCEs that can be achieved with these materials that are close to or exceed those of the Pt CEs. It also presents some perspectives in the development of the G-based materials as CEs.
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