A hybrid rinse solvent (n-hexane mixed with chlorobenzene) is developed for reproducibly preparing highly flat perovskite films on planar substrates via solvent engineering process. The hybrid rinse solvent induces to form a well-defined intermediate phase, and hence assists the formation of highly flat and dense perovskite surface. Morphological, spectroscopic, and electrochemical characterizations show that the highly flat surface of perovskite film allows tight contact and facile interfacial charge transfer at ZnO/CH₃NH₃PbI₃/spiro-OMeTAD interfaces.

中文翻译：

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混合冲洗溶剂可在平面基材上处理高度平坦的钙钛矿薄膜

开发了一种混合漂洗溶剂（正己烷与氯苯混合），用于通过溶剂工程工艺可重复地在平面基材上制备高度平整的钙钛矿薄膜。混合漂洗溶剂可诱导形成明确的中间相，因此有助于形成高度平坦且致密的钙钛矿表面。形态，光谱学，和电化学表征表明，钙钛矿薄膜的高度平坦的表面允许紧密接触，并在氧化锌/ CH容易界面电荷转移₃ NH ₃碘化铅₃ /螺环-OMeTAD接口。