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Gradual Controlling the Work Function of Metal Electrodes by Water Dissolved Mixed Interlayers for Ambipolar Polymer Field-Effect Transistors

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We report on high-performance organic field-effect transistors (OFETs) with low-cost Mo source/drain electrode by water base solution-processed hybrid PEI:V2O5 interlayers. We were success control of the metal electrode’s work function (Wf ) by ratio of mixture of contact interlayers and obtain the work function of the Mo electrodes progressively changed from 4.16 to 4.9 eV to reduce energy barriers of ambipolar semiconductor. With the insertion of the mixed layer, OFETs gained significantly improved performance for ambipolar 3,6-Bis-(5bromo-thiophen-2-yl)-N,N-bis (2-octyl-1-dodecyl)-1,4-dioxo-pyrrolo[3,4-c]pyrrole (DPPT-TT) polymer semiconductors, OFETs on the basis DPPT-TT with hybid mixed interlayer/Mo electrodes exhibit field-effect mobilities of 0.8 and 1.9 cm2/Vs for electron and hole mobility, respectively.
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Keywords: Interlayer; Organic Field-Effect Transistors; Solution Process

Document Type: Research Article

Affiliations: Department of Energy and Materials Engineering, Dongguk University, 30, Pildong-ro 1-gil, Jung-gu, Seoul 04620, Korea

Publication date: August 1, 2017

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  • Journal for Nanoscience and Nanotechnology (JNN) is an international and multidisciplinary peer-reviewed journal with a wide-ranging coverage, consolidating research activities in all areas of nanoscience and nanotechnology into a single and unique reference source. JNN is the first cross-disciplinary journal to publish original full research articles, rapid communications of important new scientific and technological findings, timely state-of-the-art reviews with author's photo and short biography, and current research news encompassing the fundamental and applied research in all disciplines of science, engineering and medicine.
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