Conventional processing of the halide perovskite usually utilizes ionic precursor solutions containing mobile precursor ions in a high-boiling-point solvent. The assembly of these disordered ions into low-entropic crystals needs to overcome the large thermodynamic energy barrier. Traditional processes rely on high-temperature annealing and complex anti-solvent treatments to overcome this barrier, but they remain highly uncontrollable. Here, we report a novel nonionic and low-entropic MA(MMA)_nPbI₃ ink for fast perovskite crystallization with superior {110} preferred orientation and a high Lotgering factor. And the ink-based films exhibit an extraordinary long carrier diffusion length of 4.6 μm at the single-crystal level. With facial one-step processing, the corresponding photovoltaic cell exhibits a record efficiency of 21.8% based on the MAPbI₃-system. Scaling of active area from 0.096 to 0.5 cm² did not deteriorate the cell performance as the efficiency remained over 21%. These results demonstrate the potential of this nonionic ink for the industrial transition of perovskite photovoltaic technology.

卤化钙钛矿的常规加工通常利用在高沸点溶剂中含有移动前体离子的离子前体溶液。将这些无序离子组装成低熵晶体需要克服较大的热力学能垒。传统工艺依靠高温退火和复杂的抗溶剂处理来克服这一障碍，但它们仍然高度不可控。在这里，我们报告一种新型的非离子和低熵的MA（MMA）_n PbI ₃用于快速钙钛矿结晶的油墨，具有优越的{110}首选取向和较高的Lotgering系数。并且，基于墨的膜在单晶水平上表现出非常长的4.6μm的载流子扩散长度。通过面部一步法处理，基于MAPbI _3-系统，相应的光伏电池显示出21.8％的创纪录效率。有效面积从0.096扩展到0.5 cm ²不会使电池性能恶化，因为效率仍然超过21％。这些结果证明了这种非离子墨水在钙钛矿光伏技术的工业化转型中的潜力。