title: Interfaces in perovskite solar cells.
abstract: The interfacial atomic and electronic structures, charge transfer processes, and interface engineering in perovskite solar cells are discussed in this review. An effective heterojunction is found to exist at the window/perovskite absorber interface, contributing to the relatively fast extraction of free electrons. Moreover, the high photovoltage in this cell can be attributed to slow interfacial charge recombination due to the outstanding material and interfacial electronic properties. However, some fundamental questions including the interfacial atomic and electronic structures and the interface stability need to be further clarified. Designing and engineering the interfaces are also important for the next-stage development of this cell.
authors: Key Laboratory for Renewable Energy, Chinese Academy of Sciences, Beijing, 100190, PR China.|Beijing Key Laboratory for New Energy Materials and Devices, Beijing, 100190, PR China.|Institute of Physics, Chinese Academy of Sciences, Beijing, 100190, PR China.
authors: Jiangjian
authors: J
authors: Shi
authors: Key Laboratory for Renewable Energy, Chinese Academy of Sciences, Beijing, 100190, PR China.|Beijing Key Laboratory for New Energy Materials and Devices, Beijing, 100190, PR China.|Institute of Physics, Chinese Academy of Sciences, Beijing, 100190, PR China.
authors: Xin
authors: X
authors: Xu
authors: Key Laboratory for Renewable Energy, Chinese Academy of Sciences, Beijing, 100190, PR China.|Beijing Key Laboratory for New Energy Materials and Devices, Beijing, 100190, PR China.|Institute of Physics, Chinese Academy of Sciences, Beijing, 100190, PR China.
authors: Dongmei
authors: D
authors: Li
authors: Key Laboratory for Renewable Energy, Chinese Academy of Sciences, Beijing, 100190, PR China.|Beijing Key Laboratory for New Energy Materials and Devices, Beijing, 100190, PR China.|Institute of Physics, Chinese Academy of Sciences, Beijing, 100190, PR China.
authors: Qingbo
authors: Q
authors: Meng
keywords: atomic structures; charge transfer; electronic structures; interface engineering; interfaces; perovskite solar cells