Title

Diffusion mediated photoconduction in multiwalled carbon nanotube films

Authors

Authors

B. K. Sarker; M. Arif; P. Stokes;S. I. Khondaker

Abbreviated Journal Title

J. Appl. Phys.

Keywords

Physics, Applied

Abstract

We present a near infrared photoresponse study of large area multiwalled carbon nanotube (MWNT) films with different electrode separations. We show that the photocurrent strongly depends on the position of the laser spot with maximum response occurring at the metal-film interface. The time constant of 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. (C) 2009 American Institute of Physics. [doi: 10.1063/1.3243335]

Journal Title

Journal of Applied Physics

Volume

106

Issue/Number

7

Publication Date

1-1-2009

Document Type

Article

Language

English

First Page

4

WOS Identifier

WOS:000270915600106

ISSN

0021-8979

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