Novel π–conjugated cyanostilbene-based semiconductors (Hex-3,5-TFPTA and Hex-4-TFPTA) with tight molecular stacking and optimized energy levels are synthesized. Hex-4-TFPTA exhibits high-performance n-type organic field-effect transistor (OFET) properties with electron mobilities as high as 2.14 cm2 V−1s−1 and on-off current ratios

An effective strategy for significantly increasing the organic transistor mobility with simultaneous reduction of the threshold voltage utilizing discontinuous nano-patches of charge-transfer doping layer is demonstrated. By overlaying the nano-patches on top of a given semiconducting film, mobility and threshold voltage of p-type pentacene are remarkably improved to 4.52 cm(2) V(-1) s(-1) and -0.4 V, and those of n-type Hex-4-TFPTA are also improved to 2.57 cm(2) V(-1) s(-1) and 4.1 V.

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Soo Young Park and co‐workers demonstrate an effective strategy for implementing discontinuous nanopatches on top of an organic semiconductor, leading to significantly enhanced field‐effect mobility with simultaneous reduction of threshold voltages of organic transistors. Mobility and threshold voltage of p‐type pentacene are remarkably improved to 4.52 cm2 V−1 s−1 and −0.4 V, and those of n‐type Hex‐4‐TFPTA are also improved to 2.57 cm2 V−1 s−1 and 4.1 V by overlaying the several nanometer‐thick nanopatches of charge‐transfer doping layer. The interfacial charge‐transfer doping decreases the density of trap states in the organic semiconductor, generating desirable transistor performances.