| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 10706570 | Current Applied Physics | 2005 | 5 Pages |
Abstract
We have studied the current-voltage (I-V) characteristics of polydiacetylene (PDA) thin films in the temperature region 300-1.7 K. It was found that at electric fields higher than 2Â ÃÂ 104 V/cm, the I-V characteristics are strongly super-linear with negative temperature coefficient of starting voltage. Negative gate voltage increases the source-drain current (the effect is more pronounced at low temperature), whereas the magnetic field up to 7 T does not affect it. The results demonstrate that at low temperature the charge transport is mainly supported due to a charge injection and tunneling from the metallic banks, whereas at higher temperatures the activation energy is related to the band gap mismatch between the different polymer chains or granules.
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Authors
A.N. Aleshin, S.W. Chu, V.I. Kozub, S.W. Lee, J.Y. Lee, S.H. Lee, D.W. Kim, Y.W. Park,