Please use this identifier to cite or link to this item: https://doi.org/10.1016/j.orgel.2010.05.013
Title: New scenarios of charge transport in PEDT:PSS conducting polymer: From hole resonant tunneling to cationic motion and relaxation
Authors: Xie, X.N. 
Lee, K.K.
Chen, X. 
Loh, K.P. 
Sow, C.H. 
Wee, A.T.S. 
Keywords: Cationic motion and relaxation
Negative differential resistance
PEDT:PSSH
Issue Date: Aug-2010
Source: Xie, X.N., Lee, K.K., Chen, X., Loh, K.P., Sow, C.H., Wee, A.T.S. (2010-08). New scenarios of charge transport in PEDT:PSS conducting polymer: From hole resonant tunneling to cationic motion and relaxation. Organic Electronics: physics, materials, applications 11 (8) : 1432-1438. ScholarBank@NUS Repository. https://doi.org/10.1016/j.orgel.2010.05.013
Abstract: This work reports a series of distinct current density∼field (JE) characteristics of the poly(3,4-ethylenedioxythiophene) and poly(styrene sulfonic acid) (or PDET:PSS) conducting polymer system. Symmetrical and asymmetrical negative differential resistance (NDR) behaviors are observed for metal/PEDT:PSS/metal sandwich devices, and these novel behaviors are related to hole injection and resonant tunneling, hole blockage and extraction, and ionic motion in the PEDT:PSS films. Both the PEDT:PSS/metal interface configuration and film thickness have strong effect on the manifestation of the NDR characteristic. It is proposed that phase segregation in μm-thick PEDT:PSS films could lead to the conversion of hole-dominated transport to ionic motion-dominated conduction, thus causing a drastic change in JE characteristics of films with different thickness. Our results highlight the important effect of PEDT:PSS/metal interface and PEDT:PSS film thickness on charge conduction, and broaden our current understanding of this model organic system with both electronic and ionic conducting components. © 2010 Elsevier B.V. All rights reserved.
Source Title: Organic Electronics: physics, materials, applications
URI: http://scholarbank.nus.edu.sg/handle/10635/53054
ISSN: 15661199
DOI: 10.1016/j.orgel.2010.05.013
Appears in Collections:Staff Publications

Show full item record
Files in This Item:
There are no files associated with this item.

SCOPUSTM   
Citations

2
checked on Dec 13, 2017

WEB OF SCIENCETM
Citations

2
checked on Nov 15, 2017

Page view(s)

48
checked on Dec 9, 2017

Google ScholarTM

Check

Altmetric


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