Broad spectral response using carbon nanotube/organic semiconductor/C 60 photodetectors

Michael S. Arnold, Jeramy D. Zimmerman, Christopher K. Renshaw, Xin Xu, Richard R. Lunt, Christine M. Austin, Stephen R. Forrest

Research output: Research - peer-reviewArticle

  • 146 Citations

Abstract

We demonstrate that photogenerated excitons in semiconducting carbon nanotubes (CNTs) can be efficiently dissociated by forming a planar heterojunction between CNTs wrapped in semiconducting polymers and the electon acceptor, C60. Illumination of the CNTs at their near- infrared optical band gap results in the generation of a short-circuit photocurrent with peak external and internal quantum efficiencies of 2.3% and 44%, respectively. Using soft CNT-hybrid materials systems combining semiconducting small molecules and polymers, we have fabricated broad-band photodetectors with a specific detectivity >1010 cm Hz1/2 W1- from λ= 400 to 1450 nm and a response time of t = 7.2 ± 0.2 ns.

LanguageEnglish (US)
Pages3354-3358
Number of pages5
JournalNano Letters
Volume9
Issue number9
DOIs
StatePublished - Sep 9 2009
Externally publishedYes

Profile

organic semiconductors
spectral sensitivity
photometers
carbon nanotubes
Carbon Nanotubes
Semiconducting organic compounds
Photodetectors
Carbon nanotubes
polymers
short circuits
photocurrents
heterojunctions
quantum efficiency
illumination
excitons
broadband
molecules
Semiconducting polymers
Hybrid materials
Optical band gaps

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Bioengineering
  • Chemistry(all)
  • Materials Science(all)
  • Mechanical Engineering

Cite this

Arnold, M. S., Zimmerman, J. D., Renshaw, C. K., Xu, X., Lunt, R. R., Austin, C. M., & Forrest, S. R. (2009). Broad spectral response using carbon nanotube/organic semiconductor/C 60 photodetectors. Nano Letters, 9(9), 3354-3358. DOI: 10.1021/nl901637u

Broad spectral response using carbon nanotube/organic semiconductor/C 60 photodetectors. / Arnold, Michael S.; Zimmerman, Jeramy D.; Renshaw, Christopher K.; Xu, Xin; Lunt, Richard R.; Austin, Christine M.; Forrest, Stephen R.

In: Nano Letters, Vol. 9, No. 9, 09.09.2009, p. 3354-3358.

Research output: Research - peer-reviewArticle

Arnold, MS, Zimmerman, JD, Renshaw, CK, Xu, X, Lunt, RR, Austin, CM & Forrest, SR 2009, 'Broad spectral response using carbon nanotube/organic semiconductor/C 60 photodetectors' Nano Letters, vol 9, no. 9, pp. 3354-3358. DOI: 10.1021/nl901637u
Arnold MS, Zimmerman JD, Renshaw CK, Xu X, Lunt RR, Austin CM et al. Broad spectral response using carbon nanotube/organic semiconductor/C 60 photodetectors. Nano Letters. 2009 Sep 9;9(9):3354-3358. Available from, DOI: 10.1021/nl901637u
Arnold, Michael S. ; Zimmerman, Jeramy D. ; Renshaw, Christopher K. ; Xu, Xin ; Lunt, Richard R. ; Austin, Christine M. ; Forrest, Stephen R./ Broad spectral response using carbon nanotube/organic semiconductor/C 60 photodetectors. In: Nano Letters. 2009 ; Vol. 9, No. 9. pp. 3354-3358
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