Perovskite solar cells (PSCs) have attracted tremendous attention due to their rapid growth in efficiency and low cost. In this work, an effective perovskite material was developed by the interaction of chloride (Cl⁻) ions and dimethyl sulfoxide (DMSO). Crystal nucleus formation was enhanced, and the crystallization was delayed by adding a moderate amount of chloride ions to the (FAPbI₃)_0.85(MAPbBr₃)_0.15 solution while reducing the amount of DMSO properly. This helped expand the grain size while eliminating cracks and particles on the Cl-(FAPbI₃)_0.85(MAPbBr₃)_0.15 perovskite film. The proposed PSCs were shown to exhibit high power conversion efficiency of 18% with negligible hysteresis.

中文翻译：

---

通过溶剂工程可控制钙钛矿型太阳能电池的结晶

钙钛矿太阳能电池（PSC）由于其效率和低成本的快速增长而备受关注。在这项工作中，有效的钙钛矿材料是由氯（Cl组成的相互作用开发^-离子和二甲亚砜（DMSO））。通过向（FAPbI ₃）_0.85（MAPbBr ₃）_0.15溶液中添加适量的氯离子，同时适当减少DMSO的量，可以增强晶核的形成，并延迟结晶。这有助于扩大晶粒尺寸，同时消除了Cl-（FAPbI ₃）_0.85（MAPbBr ₃）_0.15上的裂纹和颗粒钙钛矿膜。拟议的PSC表现出18％的高功率转换效率，而滞后可以忽略不计。