Nonlinear transport in semiconducting polymers at high carrier densities

Yuen, Jonathan D., Menon, Reghu, Coates, Nelson E., Namdas, Ebinazar B., Cho, Shinuk, Hannahs, Scott T., Moses, Daniel and Heeger, Alan J. (2009) Nonlinear transport in semiconducting polymers at high carrier densities. Nature Materials, 8 7: 572-575. doi:10.1038/NMAT2470


Author Yuen, Jonathan D.
Menon, Reghu
Coates, Nelson E.
Namdas, Ebinazar B.
Cho, Shinuk
Hannahs, Scott T.
Moses, Daniel
Heeger, Alan J.
Title Nonlinear transport in semiconducting polymers at high carrier densities
Journal name Nature Materials   Check publisher's open access policy
ISSN 1476-1122
Publication date 2009-07
Sub-type Article (original research)
DOI 10.1038/NMAT2470
Volume 8
Issue 7
Start page 572
End page 575
Total pages 4
Place of publication United Kingdom
Publisher Nature Publishing Group
Language eng
Formatted abstract
Conducting and semiconducting polymers are important materials in the development of printed, flexible, large-area electronics such as flat-panel displays and photovoltaic cells. There has been rapid progress in developing conjugated polymers with high transport mobility required for high-performance field-effect transistors (FETs), beginning with mobilities around 10 4cm2V1s1 to a recent report of 1cm2V1s1 for poly(2,5-bis(3-tetradecylthiophen- 2-yl)thieno[3,2-b]thiophene) (PBTTT). Here, the electrical properties of PBTTT are studied at high charge densities both as the semiconductor layer in FETs and in electrochemically doped films to determine the transport mechanism. We show that data obtained using a wide range of parameters (temperature, gate-induced carrier density, source-drain voltage and doping level) scale onto the universal curve predicted for transport in the Luttinger liquid description of the one-dimensional metal. © 2009 Macmillan Publishers Limited. All rights reserved.
Keyword Luttinger-liquid
Thin-films
Transistors
Conduction
Mobility
Q-Index Code C1
Q-Index Status Provisional Code
Institutional Status Non-UQ

Document type: Journal Article
Sub-type: Article (original research)
Collection: School of Mathematics and Physics
 
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Created: Wed, 09 Mar 2011, 13:19:51 EST