ABSTRACT
The variety of solar cells has increased considerably, from crystalline silicon solar cells, amorphous silicon thin-film solar cells to newer forms such as dye-sensitized solar cells (DSSCs) and organic solar cells. The chemical and physical properties of the graphene sheets may, therefore, be easily tailored to the required applications [12]. Such forms of graphene are typically used in graphene-based nanocomposites for organic or hybrid solar cells. Graphene has also been used for the catalytic counter electrode in DSSCs in order to replace the traditional expensive platinum (Pt) counter electrode. Based on the aforementioned discussion, graphene, which works as the electron acceptor after being functionalized with organic materials or as the Schottky junction metal layer combined with the inorganic semiconductors, has presented promising performance in solar harvesting. Considering that graphene can be manufactured by different methods with varying properties, it is a highly versatile material for applications in energy conversion and other optoelectronic devices.
