Photoresponse in large area multiwalled carbon nanotube/polymer nanocomposite films
- 26 January 2009
- journal article
- research article
- Published by AIP Publishing in Applied Physics Letters
- Vol. 94 (4), 042110
- https://doi.org/10.1063/1.3075957
Abstract
We present a near IR photoresponse study of large area multiwalled carbon nanotube/poly(3-hexylthiophene)-block-polystyrene polymer (MWNT/P3HT-b-PS) nanocompositefilms for different loading ratio of MWNT into the polymer matrix. We show that the photocurrent strongly depends on the position of the laser spot with maximum photocurrent occurring at the metal-film interface. In addition, compared to the pure MWNTfilm, the photoresponse is much larger in the MWNT/polymer composite films. The time constant for the photoresponse is slow and varies between 0.6 and 1.2 s. We explain the photoresponse by Schottky barrier modulation at the metal-film interface.Keywords
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This publication has 17 references indexed in Scilit:
- Effects of diffusion on photocurrent generation in single-walled carbon nanotube filmsApplied Physics Letters, 2008
- Carbon-based electronicsNature Nanotechnology, 2007
- Bolometric Infrared Photoresponse of Suspended Single-Walled Carbon Nanotube FilmsScience, 2006
- Photoconductivity in single wall carbon nanotube sheetsNanotechnology, 2006
- Photoconductivity Spectra of Single-Carbon Nanotubes: Implications on the Nature of Their Excited StatesNano Letters, 2005
- Electron Transport in Single-Walled Carbon NanotubesMRS Bulletin, 2004
- Photoconductivity of single-wall carbon nanotubes under continuous-wave near-infrared illuminationApplied Physics Letters, 2003
- Photoconductivity of Single Carbon NanotubesNano Letters, 2003
- Carbon Nanotubes--the Route Toward ApplicationsScience, 2002
- Molecular photodesorption from single-walled carbon nanotubesApplied Physics Letters, 2001