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Associated Title(s): Advanced Biosystems, Advanced Electronic Materials, Advanced Energy Materials, Advanced Engineering Materials, Advanced Functional Materials, Advanced Healthcare Materials, Advanced Materials Interfaces, Advanced Materials Technologies, Advanced Optical Materials, Advanced Science, Advanced Sustainable Systems, Global Challenges, Laser & Photonics Reviews, Particle & Particle Systems Characterization, Small Methods, Small
Organic Field-Effect Transistors: Remarkable Mobility Increase and Threshold Voltage Reduction in Organic Field-Effect Transistors by Overlaying Discontinuous Nano-Patches of Charge-Transfer Doping Layer on Top of Semiconducting Film (Adv. Mater. 5/2013)
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.