Photoresponse in large area multi-walled carbon nanotube/polymer nanocomposite films

Paul Stokes; Liwei Liu; Jianhua Zou; Lei Zhai; Qun Huo; Saiful I. Khondaker

doi:10.1063/1.3075957

Photoresponse in large area multi-walled carbon nanotube/polymer nanocomposite films

Materials Science 2009-11-13 v1

Authors: Paul Stokes , Liwei Liu , Jianhua Zou , Lei Zhai , Qun Huo , Saiful I. Khondaker

View on arXiv ↗ PDF ↗ DOI ↗

Abstract

We present a near IR photoresponse study of large area multi-walled carbon nanotube/poly(3-hexylthiophene)-block-polystyrene polymer (MWNT/P3HT-b-PS) nanocomposite films 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 maxiumum photocurrent occurring at the metal - film interface. In addition, compared to the pure MWNT film, 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 seconds. We explain the photoresponse by Schottky barrier modulation at the metal - film interface.

Keywords

photoresponse multi-walled carbon nanotubes polymer nanocomposite films Schottky barrier near IR MWNT/P3HT-b-PS photocurrent

Cite

@article{arxiv.0812.4832,
  title  = {Photoresponse in large area multi-walled carbon nanotube/polymer nanocomposite films},
  author = {Paul Stokes and Liwei Liu and Jianhua Zou and Lei Zhai and Qun Huo and Saiful I. Khondaker},
  journal= {arXiv preprint arXiv:0812.4832},
  year   = {2009}
}

Comments

6 pages, 3 figures, 1 table

Photoresponse in large area multi-walled carbon nanotube/polymer nanocomposite films

Abstract

Keywords

Cite

Comments

Related papers