Interface engineering for high-performance perovskite hybrid solar cells

Recently, organometal halide perovskite solar cells (PSCs) have attracted considerable attention because of their extremely high power conversion efficiency (PCE). Not only does the performance of PSCs depend on the material properties of the device involved, but also it is dramatically affected by the nature of their interfaces present, which highly affect the carriers' extraction, transport and recombination. Therefore, interface engineering, a novel approach towards high-performance PSCs, has attracted increasing interest. In this review, we focus on recent advances in the study of PSC interfaces, which have resulted in improved device performance.