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Electrical properties of isolated poly(3,4‐ethylenedioxythiophene) nanowires prepared by template synthesis
Author(s) -
Long Y. Z.,
Duvail J. L.,
Chen Z. J.,
Jin A. Z.,
Gu C. Z.
Publication year - 2009
Publication title -
polymers for advanced technologies
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.61
H-Index - 90
eISSN - 1099-1581
pISSN - 1042-7147
DOI - 10.1002/pat.1379
Subject(s) - materials science , magnetoresistance , nanowire , condensed matter physics , conductance , pedot:pss , poly(3,4 ethylenedioxythiophene) , electrical resistivity and conductivity , coulomb , conductivity , thermal conduction , nanotechnology , electron , composite material , electrical engineering , magnetic field , chemistry , layer (electronics) , physics , engineering , quantum mechanics
Electrical conductivity, current–voltage ( I – V ) characteristics, and low‐temperature magnetoresistance of template‐synthesized poly(3,4‐ethylenedioxythiophene) (PEDOT) nanowires are reported. The room‐temperature conductivity of the semiconducting nanowire with a diameter of 82 nm is about 80 S/cm. It is found that with lowering temperature, the I – V curves show a transition from linear to nonlinear around 50 K and a clear Coulomb‐gap‐like structure appears on the differential conductance (d I /d V ) curves possibly due to enhanced electron–electron interaction. The resistance below 70 K is dependent on the applied bias voltage used in the resistance measurements due to the nonlinear I – V characteristics. The magnetoresistance below 10 K is positive and increases with lowering temperature due to the wavefunction shrinkage effect on hopping conduction. Copyright © 2009 John Wiley & Sons, Ltd.
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