Nikolai Severin, Filippo Giovanni Fabozzi, and colleagues investigated the supramolecular organization of Y6 – a widely used non-fullerene acceptor in organic solar cells – and found that co-deposition with small donor molecules leads to formation of a series of donor–acceptor two-dimensional interfacial cocrystals. The novel supramolecular structures have been thoroughly investigated by Scanning Tunneling Microscopy at the solid– liquid interface and offer a new way to control morphology and intermolecular interactions in molecular blends with implications for charge separation and device optimization.

Original publication:
N. Severin, N. Todorova, T. Neveselý, M. Davis, M. Presselt, F.G. Fabozzi, S. Hecht
Engineering Interfacial Donor–Acceptor Molecular Cocrystals.
J. Phys. Chem. Lett. 2026, 17, 7, 1972
DOI: DOI: 10.1021/acs.jpclett.5c03865