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A strong, electron‐deficient small molecule, F4‐BDOPV, has a lowest unoccupied molecular orbital (LUMO) level down to ‐4.44 eV and exhibits cofacial packing in single crystals. These features provide F4‐BDOPV with good ambient stability and large charge‐transfer integrals for electrons, leading to a high electron mobility of up to 12.6 cm2 V−1 s−1 in air.
Compared with abundant p‐type organic semiconductors with high mobilities, n‐type semiconductors with mobilities over 1 cm2 V−1 s−1 are rare. On page 8051, Y. Yi, J. Pei, and co‐workers report a new small molecule, F4‐BDOPV, with unprecedentedly high electron mobilities of up to 12.6 cm2 V−1 s−1. This is the first time that air‐stable n‐type organic semiconductors have shown mobilities surpassing...
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