标题：Single Crystal Perovskite Solar Cells: Development and Perspectives
作者：Cheng, Xiao; Yang, Shuang; Cao, Bingqiang; Tao, Xutang; Chen, Zhaolai
作者机构：[Cheng, Xiao; Yang, Shuang] Shandong Univ, Sch Mat Sci & Engn, Jinan 250061, Shandong, Peoples R China.; [Cao, Bingqiang] Qufu Normal Univ, Sch Phys 更多
通讯作者：Chen, Zhaolai;Chen, ZL
通讯作者地址：[Chen, ZL]Shandong Univ, State Key Lab Crystal Mat, Jinan 250100, Shandong, Peoples R China.
来源：ADVANCED FUNCTIONAL MATERIALS
关键词：organic-inorganic halide perovskites; perovskite solar cells; single; crystal perovskites; single crystal thin films
摘要：The efficiency of perovskite solar cells has increased to a certified value of 25.2% in the past 10 years, benefiting from the superior properties of metal halide perovskite materials. Compared with the widely investigated polycrystalline thin films, single crystal perovskites without grain boundaries have better optoelectronic properties, showing great potential for photovoltaics with higher efficiency and stability. Additionally, single crystal perovskite solar cells are a fantastic model system for further investigating the working principles related to the surface and grain boundaries of perovskite materials. Unfortunately, only a handful of groups have participated in the development of single crystal perovskite solar cells; thus, the development of this area lags far behind that of its polycrystalline counterpart. Therefore, a review paper that discusses the recent developments and challenges of single crystal perovskite solar cells is urgently required to provide guidelines for this emerging field. In this progress report, the optical and electrical properties of single crystal and polycrystalline perovskite thin films are compared, followed by the recent developments in the growth of single crystal perovskite thin films and the photovoltaic applications of this material. Finally, the challenges and perspectives of single crystal perovskite solar cells are discussed in detail.