Effect of PEDOT:PSS-molecule interface on the charge transport characteristics of the large-area molecular electronic junctions

被引：32
作者：
Wang, Gunuk [2 ]
Na, Seok-In [3 ]
Kim, Tae-Wook [3 ]
Kim, Yonghun [2 ]
Park, Sungjun [2 ]
Lee, Takhee [1 ]
机构：
[1] Seoul Natl Univ, Dept Phys & Astron, Seoul 151747, South Korea
[2] Gwangju Inst Sci & Technol, Sch Mat Sci & Engn, Kwangju 500712, South Korea
[3] Korea Inst Sci & Technol, Inst Adv Composite Mat, Jeollabuk Do 565902, South Korea
来源：
ORGANIC ELECTRONICS | 2012年 / 13卷 / 05期
关键词：
Molecular electronic devices; Molecular interface; PEDOT:PSS; SELF-ASSEMBLED MONOLAYERS; WORK FUNCTION; CONDUCTIVITY; CONDUCTANCE;
D O I：
10.1016/j.orgel.2012.02.002
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
We have studied the effect of the PEDOT:PSS-molecule contact on the electrical characteristics of molecular junctions consisting of N-alkanedithiol and naphthalenethiol molecules. In this study, we experimentally investigated the properties of PEDOT: PSS-interlayer molecular junctions as they depended on the two kinds of PEDOT: PSS films (the pure PEDOT: PSS film and the dimethyl sulfoxide (DMSO)-modified PEDOT: PSS film) and their thermal annealing treatment. We observed that the electrical properties of these molecular junctions are influenced by the morphology and conductivity of the PEDOT: PSS films and by the thermal treatment. In particular, the resistance of the PEDOT: PSS-interlayer molecular junctions depended on the kind of PEDOT: PSS film and the temperature, within the range of elevated temperatures (higher than room temperature) tested. These experimental results are explained by the change of the interfacial properties of the PEDOT: PSS-molecule contact, which are influenced by the morphology change of the PEDOT: PSS film and the removal of residual DMSO or water from the interface. (C) 2012 Elsevier B.V. All rights reserved.
引用
收藏
页码：771 / 777
页数：7
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