Impact of carbon-based charge transporting layer on the performance of perovskite solar cells

摘要

In recent years perovskite solar cells (PSC) is emerging as dominant technology among the photovoltaic world. The higher power conversion efficiency, facile deposition & fabrication techniques are making them favorable for many commercial purposes. Till now, the efficiency of 25.2% had been achieved for solid and up to 19.5% for flexible perovskite solar cells. This advancement in perovskite photovoltaic technology is achieved via massive research over the engineering of different layers of the device. Charge transporting layer (CTL) is one of the most important layers, its modification, deposition, passivation and optimization are the main challenges to be considered while experimenting. They are the interfaces among the contacts and the active layer, so, are crucial as they had to efficiently extract and transport the charges along with minimizing the traps between these layers. Here, the charge transporting layers based upon the nanomaterials of carbon and its derivatives are reported for different types of perovskite solar cells. These carbon-based nanomaterials not only enhance the power conversion efficiency and stability, but it also reduces the hysteresis loss. These materials include graphene-based materials, carbon nano tubes based and fullerene-based nanomaterials as CTL for perovskite solar cells. This review reports the use of carbon-based CTL in different forms for different types of perovskite solar cell applications.