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

Levitsky, I. A.; Euler, W. B.
September 2003
Applied Physics Letters;9/1/2003, Vol. 83 Issue 9, p1857
Academic Journal
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. © 2003 American Institute of Physics.


Related Articles

  • Temperature Dependence of Photoconductivity of Single-Wall Carbon Nanotubes. Fujiwara, A.; Matsuoka, Y.; Ogawa, N.; Miyano, K.; Kataura, H.; Maniwa, Y.; Suzuki, S.; Achiba, Y. // AIP Conference Proceedings;2003, Vol. 685 Issue 1, p156 

    Temperature dependence of photoconductivity has been investigated for single-wall carbon nanotube (SWNT) films at 0.7eV in the temperature range from 10 K to room temperature (R.T.). Although photoresponse monotonously increases with a decrease in temperature, the behavior depends on the sample....

  • Photoconductivity of single-walled carbon nanotubes. Fujiwara, Akihiko; Matsuoka, Yasuyuki; Suematsu, Hiroyoshi; Ogawa, Naoki; Miyano, Kenjiro; Kataura, Hiromichi; Maniwa, Yutaka; Suzuki, Shinzou; Achiba, Yohji // AIP Conference Proceedings;2001, Vol. 590 Issue 1, p189 

    We have investigated photoconducting properties of mat samples of singlewalled carbon nanotubes (SWNTs) in order to clarify the mechanism of photoconductivity. Two peaks are observed in photoconductivity spectra around 0.7 and 1.2 eV for both samples of SWNTs synthesized by arc discharge and...

  • Conducting pigments elucidated.  // Chemistry in Australia;Aug2012, p10 

    The article discusses the use of electrical photoconductivity, muon spin relaxation and photo-electron paramagnetic resonance (EPR measurements of solid use to show that hydration of melanin shifts the comproportionation equilibrium in order to dope electrons and protons into the system.

  • Negative and positive photoconductivity modulated by light wavelengths in carbon nanotube film. Zhu, Jia-Lin; Zhang, Guowei; Wei, Jinquan; Sun, Jia-Lin // Applied Physics Letters;9/17/2012, Vol. 101 Issue 12, p123117 

    We explore the photoconductive properties of double-walled carbon nanotube film under laser illumination at different wavelengths in both ambient air and vacuum. In our experimental measurements, the photoconductivity of the film shows a strong dependence on the wavelength of light and can be...

  • Photoconductivity decay kinetics in silver bromide photographic films. Deri, R. J.; Spoonhower, J. P.; Hamilton, J. F. // Journal of Applied Physics;3/15/1985, Vol. 57 Issue 6, p1968 

    Discusses photoconductivity decay kinetics in silver bromide photographic films. Significance of the photoconductive transients that follow pulsed laser exposure of silver halide crystals; Interpretation of data on photoelectron decay kinetics; Schematic energy diagram of the model for the...

  • Early stages of latent image formation in AgCl grains undoped or doped with iridium ions. Oikawa, Tokuju; Kaneda, Takuji // Journal of Applied Physics;3/15/1997, Vol. 81 Issue 6, p2465 

    Investigates the behavior of photoelectrons captured by traps and early stage latent image formation in undoped or Ir-doped AgCl grains with the use of photoconductivity-modulation techniques. Formation of Ag atoms in AgCl grains; Formation of Ag atoms in Ir-doped AgCl grains.

  • Photoelectron processes in heterojunctions based on organic films. Alyaev, Yu. G.; Komolov, A. S.; Smirnov, M. V. // Technical Physics Letters;Jun2008, Vol. 34 Issue 6, p522 

    The photoconductivity and photo emf have been studied in a heterostructure based on thin films of electron donor and acceptor organic compounds. It is established that the main process responsible for the photogeneration and separation of charge carriers is the decay of photoexcited molecular...

  • Charge-carrier dynamics in single-wall carbon nanotube bundles: a time-domain study. Hertel, T.; Fasel, R.; Moos, G. // Applied Physics A: Materials Science & Processing;2002, Vol. 75 Issue 4, p449 

    We present a real-time investigation of ultra-fast carrier dynamics in single-wall carbon nanotube bundles using femtosecond time-resolved photoelectron spectroscopy. The experiments allow us to study the processes governing the sub-picosecond and the picosecond dynamics of non-equilibrium...

  • Enhancement of photoelectrical properties in polymer nanocomposites containing modified single-walled carbon nanotubes by conducting dendrimer. Valentini, L.; Mengoni, F.; Armentano, I.; Kenny, J. M.; Ricco, L.; Alongi, J.; Trentini, M.; Russo, S.; Mariani, A. // Journal of Applied Physics;6/1/2006, Vol. 99 Issue 11, p114305 

    We report the photoinduced conductivity changes measured on a system composed of single-wall carbon nanotubes (SWNTs) modified by a semiconducting poly(amidoamine) dendrimer (PAMAMC) characterized by highly aromatic end groups. Under illumination hole injection into SWNTs prevails over the...


Read the Article


Sorry, but this item is not currently available from your library.

Try another library?
Sign out of this library

Other Topics