N-Channel organic thin-film transistors based on naphthalene- bis(dicarboximide) polymer for organic transistor memory using hole-acceptor layer

Khairul Anuar Mohamad, and Yousuke, Kakuta and Uesugi, Katsuhiro and Fukuda, Hisashi (2011) N-Channel organic thin-film transistors based on naphthalene- bis(dicarboximide) polymer for organic transistor memory using hole-acceptor layer. Japanese Journal of Applied Physics, 50 (9). ISSN 0021-4922

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Abstract

An investigation of threshold voltage shifts in organic thin-film transistors (OTFTs) based on poly{[N,N″-bis(2-octyldodecyl)-naphthalene-1, 4,5,8-bis(dicarboximide)-2,6-diyl]-alt-5,5″-(2,20-bithiophene)} [P(NDI2OD-T2)] with additional poly(3-hexylthiophene) (P3HT) films on a poly(methyl methacrylate) (PMMA) organic dielectric layer is reported. With a top source-drain contact structure, the device exhibited a unipolar property with n-channel characteristics similar to those of the P(NDI2OD-T2)-only device. Furthermore, the existence of P3HT films as hole acceptor-like storage layers resulted in reversible V th shift upon the application of external gate bias (V bias) for a certain bias time (T bias). Hence, the P(NDI2ODT2)/ P3HT-OTFTs exhibited a large memory window (δV th = 10.7 V) for write and erase electrically without major degradation in saturation mobility [μ sat = (1.8-2.8) × 10 ¯� cm 2 V ¯¹ s ¯¹]. These results clearly indicate the utility of the naphthalene-bis(dicarboximide) (NDI)-based polymer-hole acceptor layer in the development of n-channel organic transistor memories.

Item Type: Article
Uncontrolled Keywords: Acceptor layers, Gate bias, Memory window, N-channel, Organic dielectric layers, Organic thin film transistors, Organic transistor, Poly-3-hexylthiophene, Saturation mobility, Source-drain contacts, Storage layers, Threshold voltage shifts, Esters, Thin film transistors, Threshold voltage, Transistors, Naphthalene
Subjects: ?? QC501-766 ??
Divisions: SCHOOL > School of Engineering and Information Technology
Depositing User: Unnamed user with email storage.bpmlib@ums.edu.my
Date Deposited: 01 Oct 2012 09:10
Last Modified: 20 Oct 2017 04:52
URI: http://eprints.ums.edu.my/id/eprint/4990

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