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S. Abe, G. Sato, T. Kaneko, T. Hirata, R. Hatakeyama, K.Yokoo, S. Ono, K. Omote and Y. Kasama, “Effects of Ion Energy Control on Production of Nitrogen–C60 Compounds by Ion Implantation,” Japanese Journal of Applied Physics, Vol. 45, No. 10B, 2006, pp. 8340-8343.

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.