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Organic Field-Effect Transistors Integrated with Ti2CTx Electrodes

Abstract

Recently, MXenes, which are two-dimensional early transition metal carbides and carbonitrides, have attracted wide attention because of their unique properties. In this study, the electrode applications of Ti2CTx, a member of the MXene family, in pentacene organic field-effect transistors (OFETs) are assessed. Kelvin probe force microscopy analysis was performed to determine the work function of Ti2CTx, which is estimated to be around 5.1 eV. Devices with Ti2CTx electrodes and pentacene channels were fabricated and their electronic performances were evaluated. Contact resistance between Ti2CTx and pentacene is as low as 3 kΩcm, superior to other reported electrode materials. The temperature-dependent current–voltage transfer characteristics of the devices were used to extract Schottky barrier heights between pentacene and Ti2CTx, estimated to be 0.17 eV. This barrier height value is much lower than that of other electrode materials and demonstrates that Ti2CTx is a promising electrode for high performance OFET applications.

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Publication details

The article was received on 21 Nov 2017, accepted on 01 Feb 2018 and first published on 01 Feb 2018


Article type: Paper
DOI: 10.1039/C7NR08677F
Citation: Nanoscale, 2018, Accepted Manuscript
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    Organic Field-Effect Transistors Integrated with Ti2CTx Electrodes

    S. Lai, S. K. Jang, J. H. Cho and S. Lee, Nanoscale, 2018, Accepted Manuscript , DOI: 10.1039/C7NR08677F

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