Interface modification for organic and perovskite solar cells

Organic solar cells (OSCs) continuously attract much attention due to their potentials as the low-cost and lightweight sources of renewable energy, and the power conversion efficiency (PCE) of the state-of-the-art OSCs has reached over 10.0%. Especially, there has been an unexpected breakthrough and rapid evolution of highly efficient organic-inorganic hybrid perovskite solar cells (PSCs), and the PCE has been improved to over 20%. The interface plays a very important role on the performance of both OSCs and PSCs, as well as their stability. It is imperative to control the interface properties and understand the mechanisms for obtaining highly efficient OSCs and PSCs. In this review, we will summarize our research progress on the interface modification of OSCs and PSCs using the electron transport layer and hole transport layer, as well as the molecular template layer.