It is highly desirable to develop large-scale, low-cost fabrication techniques to process perovskite solar cells (PSCs) under ambient condition for accelerating their potential commercialization. Herein, efficient planar heterojunction (PHJ) PSCs with a simple structure of ITO/NiO_x/CH₃NH₃PbI₃ (MAPbI₃)/PC₆₁BM/Ag is fabricated via fully doctor blading under ambient condition with the humidity of ∼40%, in which the NiO_x layer, MAPbI₃ layer, and PC₆₁BM layer are deposited via doctor blading subsequently. The high-quality perovskite CH₃NH₃PbI₃ films are fabricated by one-step doctor-bladed deposition using modified precursors with the co-solvents of dimethylsulphoxide (DMSO) and dimethylformamide (DMF) along with the suitably excess MAI. The well control on solvent recipe retards the crystallization time, leading to the formation of homogeneous and uniform perovskite film with large-size domains. Furthermore, the excess MAI in the modified precursor ink is helpful to form large-size perovskite grains and high crystallinity. With the optimization, the fully doctor-bladed PHJ-PSCs under ambient condition with the power conversion efficiency (PCE) up to 10.92% is achieved, yielding an average PCE of 10.16%. The research suggests that solvent engineering is a good route for fabricating high-quality perovskite films via one-step, doctor-blading deposition, and it is feasible to achieve efficient PHJ-PSCs through fully doctor-balding technique under ambient condition.

迫切需要开发大规模，低成本的制造技术，以在环境条件下处理钙钛矿太阳能电池（PSC），以加速其潜在的商业化。这里，有效的平面异质结（PHJ）的PSC与ITO /氧化镍的简单结构_X / CH ₃ NH ₃碘化铅₃（MAPbI ₃）/ PC ₆₁ BM /银经由环境条件下完全刮涂具有〜40的制作湿度％，其中NiO _x层，MAPbI ₃层和PC ₆₁ BM层随后通过刮刀刮涂而沉积。优质钙钛矿CH ₃ NH ₃ PbI ₃通过使用修饰的前体与二甲基亚砜（DMSO）和二甲基甲酰胺（DMF）的共溶剂以及适当过量的MAI进行一步刮涂，制备薄膜。对溶剂配方的良好控制会延迟结晶时间，从而导致形成具有大尺寸畴的均匀而均匀的钙钛矿薄膜。此外，改性前体油墨中过量的MAI有助于形成大尺寸的钙钛矿晶粒和高结晶度。通过优化，可以在环境条件下实现完全刮刀式PHJ-PSC，其功率转换效率（PCE）高达10.92％，从而获得平均PCE占10.16％。研究表明，溶剂工程是通过一步刮涂法制备高质量钙钛矿薄膜的好方法，并且在环境条件下通过完全刮涂技术获得有效的PHJ-PSC是可行的。