Formation of p-n junction in double-walled carbon nanotubes based on heteromaterial encapsulation

Yongfeng Li, Rikizo Hatakeyama, Wataru Oohara, Toshiro Kaneko

Research output: Contribution to journalArticlepeer-review

6 Citations (Scopus)

Abstract

The formation of p-n junction in double-walled carbon nanotubes (DWNTs) is successfully investigated for the first time through encapsulating heteromolecules/atoms via a plasma-ion irradiation method. DWNTs filled with both electron donor atoms and electron acceptor molecules are synthesized during the plasma ion-irradiation process. It is found that the electrical transport properties of DWNTs after encapsulating either Cs-C6o or Cs-I are significantly different from those of unipolar p- or n-type DWNTs encapsulating one kind of molecules or atoms. The p-n junctions with excellent rectifying characteristics are successfully realized in many of DWNT-based devices, suggesting a new way in making functional DWNTs.

Original languageEnglish
Article number095005
JournalApplied Physics Express
Volume2
Issue number9
DOIs
Publication statusPublished - 2009 Sep 1

ASJC Scopus subject areas

  • Engineering(all)
  • Physics and Astronomy(all)

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