论文信息 - Photoconductivity of single-wall carbon nanotubes under continuous-wave near-infrared illumination

Photoconductivity of single-wall carbon nanotubes under continuous-wave near-infrared illumination

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.

Igor A. Levitsky | William B. Euler | W. Euler | I. Levitsky | W. B. Euler

[1] Jinhai Si,et al. Third-order optical nonlinearity of the carbon nanotubes , 1999 .

[2] Yoon,et al. Crossed nanotube junctions , 2000, Science.

[3] Richard E. Smalley,et al. METALLIC RESISTIVITY IN CRYSTALLINE ROPES OF SINGLE-WALL CARBON NANOTUBES , 1997 .

[4] A. Hassanien,et al. Doping mechanism in single-wall carbon nanotubes studied by optical absorption , 2000 .

[5] Naoki Ogawa,et al. Photoconductivity in Semiconducting Single-Walled Carbon Nanotubes , 2001 .

[6] H. Dai,et al. Molecular photodesorption from single-walled carbon nanotubes , 2001 .

[7] V. C. Moore,et al. Band Gap Fluorescence from Individual Single-Walled Carbon Nanotubes , 2002, Science.

[8] M. Dresselhaus,et al. Physical properties of carbon nanotubes , 1998 .

[9] R. Smalley,et al. Structure-Assigned Optical Spectra of Single-Walled Carbon Nanotubes , 2002, Science.

[10] Wei Ji,et al. Size-dependent optical limiting behavior of multi-walled carbon nanotubes , 2002 .

[11] M. Dresselhaus,et al. Carbon nanotubes : synthesis, structure, properties, and applications , 2001 .

[12] Ladislav Kavan,et al. Electrochemical Tuning of Electronic Structure of Single-Walled Carbon Nanotubes: In-situ Raman and Vis-NIR Study , 2001 .

[13] Kong,et al. Nanotube molecular wires as chemical sensors , 2000, Science.