佩多:嘘
纳米线
材料科学
纳米技术
电导率
导电聚合物
单晶
化学工程
聚合物
复合材料
结晶学
图层(电子)
化学
工程类
物理化学
作者
Boram Cho,Kyung S. Park,Jangmi Baek,Hyun Sook Oh,Yong Eun Koo Lee,Myung Mo Sung
出处
期刊:Nano Letters
[American Chemical Society]
日期:2014-05-21
卷期号:14 (6): 3321-3327
被引量:199
摘要
We developed single-crystal poly(3,4-ethylenedioxythiopene) (PEDOT) nanowires with ultrahigh conductivity using liquid-bridge-mediated nanotransfer printing with vapor phase polymerization. The single-crystal PEDOT nanowires are formed from 3,4-ethylenedioxythiophene (EDOT) monomers that are self-assembled and crystallized during vapor phase polymerization process within nanoscale channels of a mold having FeCl3 catalysts. These PEDOT nanowires, aligned according to the pattern in the mold, are then directly transferred to specific positions on a substrate to generate a nanowire array by a direct printing process. The PEDOT nanowires have closely packed single-crystalline structures with orthorhombic lattice units. The conductivity of the single-crystal PEDOT nanowires is an average of 7619 S/cm with the highest up to 8797 S/cm which remarkably exceeds literature values of PEDOT nanostructures/thin films. Such distinct conductivity enhancement of single-crystal PEDOT nanowires can be attributed to improved carrier mobility in PEDOT nanowires. To demonstrate usefulness of single-crystal PEDOT nanowires, we fabricated an organic nanowire field-effect transistor array contacting the ultrahigh conductive PEDOT nanowires as metal electrodes.
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