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Open AccessLetter

Effects of the F4TCNQ-Doped Pentacene Interlayers on Performance Improvement of Top-Contact Pentacene-Based Organic Thin-Film Transistors

1
Department of Electronic and Computer Engineering, National Taiwan University of Science and Technology, No. 43, Section 4, Keelung Road, Da’an District, Taipei City 106, Taiwan
2
Graduate Institute of Electro-Optical Engineering, National Taiwan University of Science and Technology, No. 43, Section 4, Keelung Road, Da’an District, Taipei City 106, Taiwan
*
Author to whom correspondence should be addressed.
Academic Editors: Federico Bella and Claudio Gerbaldi
Materials 2016, 9(1), 46; https://doi.org/10.3390/ma9010046
Received: 10 November 2015 / Revised: 5 January 2016 / Accepted: 6 January 2016 / Published: 13 January 2016
(This article belongs to the Special Issue Electrode Materials)
In this paper, the top-contact (TC) pentacene-based organic thin-film transistor (OTFT) with a tetrafluorotetracyanoquinodimethane (F4TCNQ)-doped pentacene interlayer between the source/drain electrodes and the pentacene channel layer were fabricated using the co-evaporation method. Compared with a pentacene-based OTFT without an interlayer, OTFTs with an F4TCNQ:pentacene ratio of 1:1 showed considerably improved electrical characteristics. In addition, the dependence of the OTFT performance on the thickness of the F4TCNQ-doped pentacene interlayer is weaker than that on a Teflon interlayer. Therefore, a molecular doping-type F4TCNQ-doped pentacene interlayer is a suitable carrier injection layer that can improve the TC-OTFT performance and facilitate obtaining a stable process window. View Full-Text
Keywords: pentacene; organic thin-film transistors (OTFTs); F4TCNQ; Teflon; carrier injection layer pentacene; organic thin-film transistors (OTFTs); F4TCNQ; Teflon; carrier injection layer
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MDPI and ACS Style

Fan, C.-L.; Lin, W.-C.; Chang, H.-S.; Lin, Y.-Z.; Huang, B.-R. Effects of the F4TCNQ-Doped Pentacene Interlayers on Performance Improvement of Top-Contact Pentacene-Based Organic Thin-Film Transistors. Materials 2016, 9, 46.

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