Obtaining phase-pure 2D perovskite films will extend the understanding and applications in various optoelectronic fields. Recently in Nature Energy, Liang and coworkers first present phase-pure 2D perovskites by replacing BAI with BAAc, showing stronger ionic coordination with the perovskite framework. A PCE of 16.25% with enhanced stability was obtained.

中文翻译：

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突破：相纯2D钙钛矿薄膜

获得纯相2D钙钛矿薄膜将扩展在各种光电领域的理解和应用。最近，在《自然能源》杂志上，Liang和他的同事们首先用BAAc代替BAI提出了纯相2D钙钛矿，显示出与钙钛矿骨架更强的离子配位作用。获得具有增强的稳定性的16.25％的PCE。