| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 1443858 | Synthetic Metals | 2006 | 7 Pages |
Abstract
An unusual negative differential resistance (NDR) has been observed in I–V response in p-toluensulfonate-doped polypyrrole films, leading to a conductivity switching effect of almost four orders of magnitude. The effect appears at temperatures below 20 K for highly conducting samples while it is displaced to temperatures close to the room temperature for more resistive samples. The observed correlation between conductivity and switching phenomenon provides a fingerprint of the influence played by the sample nanostructure. The relation between the chemical structure of the material and the observed physical phenomenon is discussed.
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Authors
V. Gomis, D. Bellver, N. Ferrer-Anglada, J.M. Ribó, Z. El-Hachemi, B. Movaghar,