标题：A Review of the Role of Solvents in Formation of High-Quality Solution-Processed Perovskite Films
作者：Cao, Xiaobing; Zhi, Lili; Jia, Yi; Li, Yahui; Zhao, Ke; Cui, Xian; Ci, Lijie; Zhuang, Daming; Wei, Jinquan
作者机构：[Cao, Xiaobing; Li, Yahui; Zhao, Ke; Cui, Xian; Zhuang, Daming; Wei, Jinquan] Tsinghua Univ, Sch Mat Sci & Engn, State Key Lab New Ceram & Fine Proc, 更多
通讯作者：Wei, Jinquan;Wei, JQ
通讯作者地址：[Wei, JQ]Tsinghua Univ, Sch Mat Sci & Engn, State Key Lab New Ceram & Fine Proc, Key Lab Adv Mat Proc Technol,Minist Educ, Beijing 100084, Peoples R C 更多
来源：ACS APPLIED MATERIALS & INTERFACES
关键词：solution-proceed technique; solvent; perovskite film; crystallization;; growth mechanism
摘要：Recently, perovskite solar cells have attracted great attention because of their outstanding photovoltaic performance and ease of fabrication. High-quality perovskite films hold a key in getting highly efficient perovskite solar cells. Solution-processed fabrication technique is the most widely adopted for preparing perovskite films because of its low cost. In the solution-proceed perovskite films, solvents not only play the role of dissolving the solute but also participate in the crystallization of perovskite. In the one-step method, solvents play key roles in controlling morphology, widening process window, and achieving room-temperature crystallization of perovskite films. In addition, the solvents play important roles in controlling the nuclei/growth, suppressing volume expansion during the two-step method. Especially, the solvent can induce grain coarsening during the annealing process. A deep understanding of the multiplicity of roles during the formation of perovskite films will help understand the formation mechanism of perovskite films. Here, a systematic review on the progress in fabrication of high-quality perovskite films by making use of solvent to control the crystallization is presented. Meanwhile, we elucidate the key roles of solvent in the fabrication of high-quality perovskite films.