T. Shimada, T. Sugai, Y. Ohno, S. Kishimoto, T. Mizutani, H. Yoshida, T. Okazaki and H. Shinohara, “Double- Wall Carbon Nanotube Field-Effect Transistors: Ambipolar Transport Characteristics,” Applied Physics Letters, Vol. 84, No. 13, 2004, pp. 2412-2414.

has been cited by the following article:

• TITLE: Electrical Transport Properties of C59N Azafullerene Encapsulated Double-Walled Carbon Nanotube

  AUTHORS: Y. F. Li, T. Kaneko, R. Hatakeyama

  KEYWORDS: Carbon Nanotubes, FET, Encapsulation, Azafullerene

  JOURNAL NAME: Open Journal of Microphysics, Vol.1 No.2, August 30, 2011

  ABSTRACT: Electrical transport properties of double-walled carbon nanotubes (DWNTs) are modulated by encapsulating the azafullerene C59N which is synthesized via a plasma ion-irradiation method. The encapsulation of C59N molecules inside DWNTs has been confirmed by both transmission electron microscopy and Raman spectroscopy. The pristine DWNTs with outer diameter 4 - 5 nm are found to exhibit an ambipolar semiconducting behavior due to their small band gap. It is found that C60 fullerene encapsulated DWNTs exhibit a unipolar p-type semiconducting behavior. By comparison, C59N encapsulated DWNTs display an n-type semiconducting behavior. Our findings demonstrate that C59N operates as an electron donor compared with the acceptor behavior of C60, which is further clarified by photoelectron emission spectroscopy.