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Please use this identifier to cite or link to this item: http://hdl.handle.net/10119/3358

Title: Photoconductivity of Single-Wall Carbon Nanotube Films
Authors: Fujiwara, A
Matsuoka, Y
Matsuoka, Y
Suematsu, H
Ogawa, N
Miyano, K
Kataura, H
Maniwa, Y
Suzuki, S
Achiba, Y
Keywords: Carbon nanotubes
Photoconductivity
Semiconductor
Transport properties
Issue Date: 2004
Publisher: Elsevier Science B.V.
Magazine name: Carbon
Volume: 42
Number: 5-6
Start page: 919
End page: 922
DOI: 10.1016/j.carbon.2003.12.063
Abstract: Time-resolved photoconductivity measurements were carried out on single-wall carbon nanotube (SWNT) films at various temperatures. Photoconductivity excitation spectra show two clear peaks around 0.7 and 1.2 eV. Observed peaks in the spectra correspond to the optical absorption between symmetrical bands of semiconducting SWNTs. The analysis of this feature allows insight into the transport properties of semiconducting SWNTs. Signal profiles in the photoresponse at low temperatures depend strongly on the sample, while intensity of the photoresponse monotonously increases with a decrease in temperature for all samples. Photo-induced current for a sample decays rapidly after the laser pulse irradiation. For another sample, on the other hand, it decreases gradually and remains up to a few hundred nano seconds, showing the existence of trapping sites in the nanotubes.
Rights: Elsevier Ltd., A. Fujiwara, Y. Matsuoka, Y. Matsuoka, H. Suematsu, N. Ogawa, K. Miyano, H. Kataura, Y. Maniwa, S. Suzuki and Y. Achiba, Carbon, 42(5-6), 2004, 919-922. http://www.sciencedirect.com/science/journal/00086223
URI: http://hdl.handle.net/10119/3358
Material Type: author
Appears in Collections:c10-1. 雑誌掲載論文 (Journal Articles)

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