Conductivity enhancement of stretchable PEDOT:PSS nanowire interconnect fabricated by fountain-pen lithography
- Authors
- Kim, Jung Hyun; Chang, Won Suk; Kim, Daeho; Cho, Sung Ho; Seol, Seung Kwon
- Issue Date
- Oct-2014
- Publisher
- ELSEVIER SCIENCE SA
- Keywords
- Polymers; Nanostructures; Electrical conductivity; Electronic materials
- Citation
- MATERIALS CHEMISTRY AND PHYSICS, v.147, no.3, pp.1171 - 1174
- Indexed
- SCIE
SCOPUS
- Journal Title
- MATERIALS CHEMISTRY AND PHYSICS
- Volume
- 147
- Number
- 3
- Start Page
- 1171
- End Page
- 1174
- URI
- https://scholarworks.bwise.kr/hanyang/handle/2021.sw.hanyang/159015
- DOI
- 10.1016/j.matchemphys.2014.06.075
- ISSN
- 0254-0584
- Abstract
- We demonstrated an effective method for producing poly(3,4-ethylenedioxythiophene) poly(styrenesulfonate) (PEDOT:PSS) arched nanowires, which are used as stretchable interconnects. Three-dimensional PEDOT:PSS arched wires with high stretchability were fabricated by a simple, inexpensive fountain pen lithography (FPL) technique. The grown PEDOT:PSS wires showed superior stretchable behavior: the wire conductance was only decreased by less than 0.5% when the horizontal strain increased by up to 80%. Using a steaming treatment with a co-solvent of ethanol and water, the wire conductivity was enhanced from 2 S m(-1) to 1.57 x 10(3) S m(-1), without undesirable deformation or collapse of the wires. The conductivity enhancement is attributed to enhancement in the inter-PEDOT chain charge transport, resulting from a conformational change of PEDOT and PSS chains by sequential solvation of PEDOT and PSS chains near the wire surface.
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