Single-Crystal Poly(3,4-ethylenedioxythiophene) Nanowires with Ultrahigh Conductivity
- Authors
- Cho, Boram; Park, Kyung S.; Baek, Jangmi; Oh, Hyun S.; Lee, Yong-Eun Koo; Sung, Myung M.
- Issue Date
- Jun-2014
- Publisher
- AMER CHEMICAL SOC
- Keywords
- PEDOT; conducting polymer; single-crystal organic nanowires; direct printing; vapor phase polymerization
- Citation
- NANO LETTERS, v.14, no.6, pp.3321 - 3327
- Indexed
- SCIE
SCOPUS
- Journal Title
- NANO LETTERS
- Volume
- 14
- Number
- 6
- Start Page
- 3321
- End Page
- 3327
- URI
- https://scholarworks.bwise.kr/hanyang/handle/2021.sw.hanyang/143367
- DOI
- 10.1021/nl500748y
- ISSN
- 1530-6984
- Abstract
- 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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