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Long, Y.-Z., Duvail, J.-L., Chen, Z., Jin, A. & Gu, C.-Z. (2008) Electrical conductivity and current-voltage characteristics of individual conducting polymer PEDOT nanowires. Chin. Phys. Lett. 25 3474–3477. 
Added by: Richard Baschera (2016-03-10 21:58:41)   Last edited by: Richard Baschera (2016-05-24 14:19:23)
Type de référence: Article
Numéro d'identification (ISBN etc.): 0256-307X
Clé BibTeX: Long2008
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Catégories: PMN
Mots-clés: charge-transport, gap, nanofibers, nanotubes, polyaniline, polypyrrole
Créateurs: Chen, Duvail, Gu, Jin, Long
Collection: Chin. Phys. Lett.
Consultations : 8/398
Indice de consultation : 2%
Indice de popularité : 0.5%
Résumé     
We report the current-voltage ( I-V) characteristics and electrical conductivity of individual template-synthesized poly( 3,4-ethylenedioxythiophene) ( PEDOT) nanowires ( 190 +/- 6 nm in diameter and sigma(RT) = 11.2 +/- Omega(-1) cm(-1)) over a wide temperature range from 300 to 10 K. With lowering temperature, the I-V characteristics become nonlinear around 50 K, and a clear Coulomb gap-like structure appears in the differential conductance ( dI/dV) spectra. The temperature dependence of the resistance below 70K follows ln R proportional to T(-1/2), which can be interpreted as Efros-Shklovskii hopping conduction in the presence of a Coulomb gap. In addition, the influences of measurement methods such as the applied bias voltage magnitude, the two-probe and four-probe techniques used in the resistance measurements are also reported and discussed.
  
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