Recent Research Developments of Perovskite Solar Cells

For the first time in 2009, the inorganic‐organic hybrid perovskite materials were applied in liquid dye‐sensitized solar cells. In 2013, the power conversion efficiency successfully reached 15%, followed by great amount of research papers bursting out. Till August 2014, the highest efficiency is certified to 17.9%, and the reported efficiency is even up to 19.3%. They quickly go beyond dye‐sensitized solar cells and organic solar cells. It is expected the perovskite has its efficiency same to the single‐crystal silicon cells. The "game changer" of solar cells is coming. The perovskite solar cells are cheap and easily to be made, which will benefit both science and industry. This review summarized recent development of both perovskite materials and solar cell devices, not only including new material developments of perovskite compositions, structures, and fabrication methods, but also focusing on device structures, charge transfer mechanism and stability properties of perovskite solar cells. Their perspective is also estimated.