In article number 2000479, Jörg Rappich and co‐workers address early stages of film formation and crystallization of organic lead triiodide perovskites by employing in‐situ high‐speed spectral reflectance measurements. The time scale ranges from 0.2 milliseconds to seconds. Data were taken during spincoating and subsequent low‐temperature annealing. The measurements enable the investigation of changes in the solution of the spin‐coating process. The evaporation of the solvent during spin‐coating results in the spontaneous crystallization of the perovskite layer. During the subsequent annealing process, the diffuse reflectance measured with high sensitivity provides insight into the transformation and crystallization process of the precursor layer to the final perovskite layer.

中文翻译：

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有机-无机钙钛矿前体溶液的旋涂和退火过程中的快速光学反射率测量

在文章2000479中，JörgRappich及其同事通过采用原位高速光谱反射率测量解决了有机三碘化铅钙钛矿的成膜和结晶的早期阶段。时间范围从0.2毫秒到秒。在旋涂和随后的低温退火过程中获取数据。通过测量，可以研究旋涂过程中溶液的变化。旋涂过程中溶剂的蒸发导致钙钛矿层的自发结晶。在随后的退火过程中，以高灵敏度测得的漫反射率可洞悉前体层到最终钙钛矿层的转变和结晶过程。