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Materials 2016, 9(1), 46; doi:10.3390/ma9010046

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
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)
View Full-Text   |   Download PDF [2098 KB, uploaded 13 January 2016]   |  

Abstract

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
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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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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