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Solution‐processed hybrid perovskite semiconductors attract a great deal of attention, but little is known about their formation process. The one‐step spin‐coating process of perovskites is investigated in situ, revealing that thin‐film formation is mediated by solid‐state precursor solvates and their nature. The stability of these intermediate phases directly impacts the quality and reproducibility...
The solidification of hybrid perovskite (MAPbX3, X = I, Br, Cl) inks is studied in situ by A. Amassian and co‐workers in article 1604113, revealing a remarkably complex process mediated by strong solvent‐solute interactions, the outcome of which is halide‐dependent. The ink is shown to solidify within 15–20s of spinning, forming a highly solvated (60–70 vol%) precursor phase. Crystalline order of...
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