ABSTRACT
Two-dimensional (2D) carbon-based material has many benefits such as high conductivity, good mechanical flexibility, high transparency, and decent chemical stability, which make these materials as an excellent candidate for optoelectronic devices. These 2D materials are favorite choices for the next generation of photovoltaic technology owning to the scaling up trends like their good flexibility, thinning of active layer materials, and atomically thin bodies. In this chapter, we emphasize the current advances of 2D materials in organic solar cells, and perovskite solar cells, in terms of additive in active layer material, charge transport layers, and electrodes materials to efficiently improve the device efficiency and the stability. We also shed some light on the various categories of 2D materials and their synthesis approaches.
