Photoconductivity of single-wall carbon nanotubes under continuous-wave near-infrared illumination
- 1 September 2003
- journal article
- Published by AIP Publishing in Applied Physics Letters
- Vol. 83 (9) , 1857-1859
- https://doi.org/10.1063/1.1606099
Abstract
The photoconductivity of films of single-wall carbon nanotubes has been studied under continuous-wave near-infrared illumination. The photocurrent exhibits a linear response with the light intensity and with bias voltage up to 5 V. The temporal photoresponse of on/off step illumination shows a relatively slow relaxation time (4.3 s for films with a thickness of ∼500 nm), which can be interpreted in terms of a kinetic model that takes into account the binding of photoelectrons with adsorbed oxygen. Possible applications of this photosensitive material are discussed.Keywords
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