2D-Materials-based Heterostructures for PV Energy Conversion

Over the last decades, there has been a rapid development seen in perovskite solar cells, quantum dot solar cells, and dye-sensitized solar cells, with record conversion efficiency being achieved swiftly. All these have shown great potential for realistic larger-scale application because of their advantages in optoelectronic properties and decreasing manufacturing cost. Within all the categories of solar cells, two-dimensional (2D) materials-based systems have attracted massive attention due to their promising chemical, optical, electrical, and physical properties. To date, there are studies suggesting the synergy effects owing to the combination of 2D materials and other component of solar cells. In this chapter, we summarized and discussed the recent progresses on the applications of 2D materials in constructing heterostructures for photovoltaic system. The strengths and advantages of 2D components such as electrode, charge transportation layers, and other additives are also discussed. Moreover, we addressed the challenges imposed by the 2D system and the opportunities offered for further development.