The compositional engineering of organic–inorganic hybrid perovskites for high-performance perovskite solar cells

In the last decade, organic–inorganic perovskite materials have drawn great attentions in both academic and industrial sectors because of their remarkable optoelectronic and photovoltaic properties. Various perovskite materials have been investigated for high-performance perovskite solar cells. In this short review, we aim to illustrate optimized photovoltaic properties of perovskite materials through compositional engineering of organic–inorganic hybrid perovskite materials. We firstly elaborate the progresses of compositional engineering for each of three components in AMX3 perovskite materials, and then highlight the optoelectronic and photovoltaic properties of the resultant perovskite materials. It was found that the compositional engineering of organic–inorganic hybrid perovskites plays an important role in device performance of perovskite solar cells. Lastly, the outlook and prospects of compositional engineering of organic–inorganic hybrid perovskite materials are briefly discussed.