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Electrical conduction through self-assembled monolayers in molecular junctions: Au/molecules/Au versus Au/molecule/PEDOT:PSS/Au

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Abstract
We fabricated and characterized a large number of octanedithiol (denoted as DC8) molecular devices as vertical metal-molecule-metal structure with or without using an intermediate conducting polymer layer of poly (3,4-ethylenedioxythiophene) stabilized with poly(4-styenesulfonic acid) (called as PEDOT:PSS). The electronic transport properties of DC8 molecular devices with and without PEDOT:PSS layer were statistically compared in terms of current density and device yield. The yields of the working molecular devices were found to be similar to 1.75% (84 out of 4800 devices) for Au/DC8/Au junctions and similar to 58% (74 out of 128 devices) for Au-DC8/PEDOT:PSS/Au junctions. The tunneling decay constants were obtained with the Simmons tunneling model and a multibarrier tunneling model for two kinds of molecular devices with and without PEDOT:PSS layer. (C) 2009 Elsevier B.V. All rights reserved.
Author(s)
Wang, GunukYoo, HanaNa, Seok-InKim, Tae-WookCho, ByungjinKim, Dong-YuLee, Takhee
Issued Date
2009-11
Type
Article
DOI
10.1016/j.tsf.2009.07.094
URI
https://scholar.gist.ac.kr/handle/local/16913
Publisher
Elsevier Sequoia
Citation
Thin Solid Films, v.518, no.2, pp.824 - 828
ISSN
0040-6090
Appears in Collections:
Department of Materials Science and Engineering > 1. Journal Articles
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