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Paper detail

Diffusion mediated photoconduction in multi-walled carbon nanotube films

We investigated the mechanism for photoconduction in multi-walled carbon nanotube (MWNT) film of various electrode separations upon near infrared illumination. In addition to observing strong dependence of photocurrent on the position of the laser spot, we found that the time constant of the dynamic photoresponse is slow and increases with increasing electrode separations. The photoconduction mechanism can be explained by the Schottky barrier modulation at the metal-nanotube film interface and charge carrier diffusion through percolating MWNT networks.

preprint2009arXivOpen access
Biddut K. SarkerM. ArifPaul StokesSaiful I. Khondaker
cond-mat.mes-hallcond-mat.mtrl-sci
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Biddut K. SarkerM. ArifPaul StokesSaiful I. Khondaker

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