Introducing layered quasi-2D perovskite phases into a conventional 3D perovskite light-absorbing matrix is a promising strategy for overcoming the limited environmental stability of 3D perovskite solar cells. Here, we present a simple drop-casting method for preparing hybrid perovskite films comprising both quasi-2D and quasi-3D phases, formed using phenylethylammonium or iso-butylammonium as spacer cations. The film morphology, phase purity, and crystal orientation of the hybrid quasi-2D/3D perovskite films are improved significantly by applying a simple N₂ blow-drying step, together with inclusion of methylammonium chloride as an additive. An enhanced power conversion efficiency of 16.0% is achieved using an iso-butylammonium-based quasi-2D/3D perovskite layer which, to our knowledge, is the highest recorded to date for a quasi-2D/3D perovskite solar cells containing a non-spin-cast perovskite layer prepared under ambient laboratory conditions.

将层状准2D钙钛矿相引入常规3D钙钛矿光吸收基质中是克服3D钙钛矿太阳能电池有限的环境稳定性的有前途的策略。在这里，我们介绍了一种简单的滴铸法，用于制备包含准2D和准3D相的钙钛矿杂化膜，使用苯基乙基铵或异丁基铵作为间隔阳离子形成。通过应用简单的N _2可以显着改善准2D / 3D钙钛矿杂化膜的膜形态，相纯度和晶体取向。吹干步骤，以及加入甲基氯化铵作为添加剂。使用基于异丁基铵的准2D / 3D钙钛矿层可实现16.0％的提高的功率转换效率，据我们所知，这是迄今为止包含非磷酸钙的准2D / 3D钙钛矿太阳能电池的最高记录。在环境实验室条件下制备的旋铸钙钛矿层。