Tailored Supramolecular Additives to Control the Crystallization Process and Morphology of MAPbI3 DOI Creative Commons
Meike Kuhn, Felix A. Wenzel, Christopher Greve

и другие.

Small, Год журнала: 2025, Номер 21(9)

Опубликована: Фев. 5, 2025

Perovskite films feature unique optoelectronic properties, rendering them promising for electronic devices. The properties depend on the morphology a broad range of length scales from nanometers to millimeters, influenced by variety factors. However, controlling is challenging. A tailored supramolecular additive, N, N'-bis(2-aminoethyl) terephthalamide developed control intermediate and perovskite crystallization methyl ammonium lead iodide (MAPbI3) enhance thermal moisture stability in final film. Reversible coordinative interactions carbonyl groups with Pb2+ ions via Lewis acid-base adduct subsequent ion-ion peripheral grain boundaries are combined which stabilized strong hydrogen bonding pattern formed between amide moieties additive molecules. Adding low amounts this precursor solution significantly decelerates structure formation systematically reduces crystallite size. Slower growth phases incorporation boundary observed multiple time-resolved techniques. Evidence single-molecule interlayers MAPbI3 crystals presence directed interaction molecules shown. Transferability approach other perovskites anticipated, paving way improved processing stability.

Язык: Английский

Tailored Supramolecular Additives to Control the Crystallization Process and Morphology of MAPbI3 DOI Creative Commons
Meike Kuhn, Felix A. Wenzel, Christopher Greve

и другие.

Small, Год журнала: 2025, Номер 21(9)

Опубликована: Фев. 5, 2025

Perovskite films feature unique optoelectronic properties, rendering them promising for electronic devices. The properties depend on the morphology a broad range of length scales from nanometers to millimeters, influenced by variety factors. However, controlling is challenging. A tailored supramolecular additive, N, N'-bis(2-aminoethyl) terephthalamide developed control intermediate and perovskite crystallization methyl ammonium lead iodide (MAPbI3) enhance thermal moisture stability in final film. Reversible coordinative interactions carbonyl groups with Pb2+ ions via Lewis acid-base adduct subsequent ion-ion peripheral grain boundaries are combined which stabilized strong hydrogen bonding pattern formed between amide moieties additive molecules. Adding low amounts this precursor solution significantly decelerates structure formation systematically reduces crystallite size. Slower growth phases incorporation boundary observed multiple time-resolved techniques. Evidence single-molecule interlayers MAPbI3 crystals presence directed interaction molecules shown. Transferability approach other perovskites anticipated, paving way improved processing stability.

Язык: Английский

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