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Issue 11, 2018
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Organic field-effect transistors integrated with Ti2CTx electrodes

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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. The contact resistance between Ti2CTx and pentacene is as low as 3 kΩ cm, superior to those of other reported electrode materials. The temperature-dependent current–voltage transfer characteristics of the devices were used to extract activation energy, estimated to be 0.17 eV. This activation energy value is much lower than those of other electrode materials and demonstrates that Ti2CTx is a promising electrode for high performance OFET applications.

Graphical abstract: Organic field-effect transistors integrated with Ti2CTx electrodes

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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, 2018,10, 5191-5197
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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, 10, 5191
    DOI: 10.1039/C7NR08677F

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