Synthesis and electronic properties of ferrocene-filled double-walled carbon nanotubes

Y. F. Li, R. Hatakeyama, T. Kaneko, T. Izumida, T. Okada, T. Kato

Research output: Contribution to journalArticlepeer-review

41 Citations (Scopus)


Double-walled carbon nanotubes (DWNTs) are filled with ferrocene molecules by a vapour diffusion method for the first time. The as-synthesized ferrocene-filled DWNTs are characterized by transmission electron microscopy (TEM), energy-dispersive x-ray spectrometry (EDX) and Raman spectroscopy. Electronic properties of double-walled carbon nanotubes (DWNTs) filled with ferrocene molecules are studied by fabricating them as the channels of field-effect transistor (FET) devices. Our results reveal that electronic properties of ferrocene-filled DWNTs are greatly modified due to the charge transfer between ferrocene molecules and DWNTs. In addition, after ferrocene molecules are decomposed inside DWNTs, electronic properties of DWNTs exhibit a further change due to Fe encapsulation, and unipolar n-type semiconducting DWNTs are consequently obtained.

Original languageEnglish
Article number025
Pages (from-to)4143-4147
Number of pages5
Issue number16
Publication statusPublished - 2006 Aug 28


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