Growth Mechanism of Strain-Dependent Morphological Change in PEDOT:PSS Films

Title
Growth Mechanism of Strain-Dependent Morphological Change in PEDOT:PSS Films
Authors
최인석Yoo-Yong LeeGwang Mook ChoiSeung-Min LimJu-Young ChoKiTae NamYoung-Chang Joo
Issue Date
2016-04
Publisher
Scientific Reports
Citation
VOL 6, NO 25332-9
Abstract
Understanding the mechanism of the strain-dependent conductivity change in polymers in stretched conditions is important. We observed a strain-induced growth of the conductive regions of PEDOT:PSS films, induced by a coalescence of conductive PEDOT-rich cores. This growth due to coalescence leads to a gradual decrease in the electrical resistivity up to 95%, independent of the thickness of the PEDOT: PSS films. The primary mechanism for the evolution of the PEDOT-rich cores proceeds by the cores growing larger as they consuming relatively smaller cores. This process is caused by a strain-induced local rearrangement of PEDOT segments in the vicinity of PSS shells around the cores and also changes the chemical environment in PEDOT, induced by the electron-withdrawing effects around the PEDOT chains. The strain-induced growth mechanism is beneficial to understanding the phenomenon of polymeric chain rearrangement in mechanical deformation and to modulating the electrical conductivity for practical applications.
URI
http://pubs.kist.re.kr/handle/201004/65015
ISSN
2045-2322
Appears in Collections:
KIST Publication > Article
Files in This Item:
There are no files associated with this item.
Export
RIS (EndNote)
XLS (Excel)
XML


qrcode

Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.

BROWSE