This image captures the transition in time of a perovskite reaction, a material used in solar devices. The intersection of reacted perovskite, left, and unreacted tin iodide crystals in a matrix of methylammonium solution (MAI), right, highlight the process of creati...
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This image captures the transition in time of a perovskite reaction, a material used in solar devices. The intersection of reacted perovskite, left, and unreacted tin iodide crystals in a matrix of methylammonium solution (MAI), right, highlight the process of creating perovskite, as the unreacted region on the right shows large crystals on the order of several microns decreasing in size as the crystals get closer to the reacted perovskite region on the right. Tin iodide crystals appear to burst out of the perovskite that it was made from, when in fact the two regions were spin coated 20 seconds apart, and thus could not react. From this image, we elucidate that the reaction time for perovskite formation is incredibly fast, and we are closer to understanding the mechanisms for perovskite reaction.
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