Soo Young Park and co-workers demonstrate on page 719 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.
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