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arXiv · 0904.4452

Diffusion mediated photoconduction in multi-walled carbon nanotube films

Biddut K. Sarker·M. Arif·Paul Stokes·Saiful I. Khondaker
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Abstract

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.

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Biddut K. Sarker, M. Arif, Paul Stokes, Saiful I. Khondaker. 2009-04-28. Diffusion mediated photoconduction in multi-walled carbon nanotube films. https://doi.org/10.1063/1.3243335

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