Kinetics of energy selective Cs encapsulation in single-walled carbon nanotubes for damage-free and position-selective doping

Toshiaki Kato, Erik C. Neyts, Yoshihiro Abiko, Toshiki Akama, Rikizo Hatakeyama, Toshiro Kaneko

Research output: Contribution to journalArticlepeer-review

3 Citations (Scopus)

Abstract

A method has been developed for damage-free cesium (Cs) encapsulation within single-walled carbon nanotubes (SWNTs) with fine position selectivity. Precise energy tuning of Cs-ion irradiation revealed that there is a clear energy window (20-60 eV) for the efficient encapsulation of Cs through the hexagonal network of SWNT sidewalls without causing significant damage. This minimum energy threshold of Cs-ion encapsulation (∼20 eV) matches well with the value obtained by ab initio simulation (∼22 eV). Furthermore, position-selective Cs encapsulation was carried out, resulting in the successful formation of pn-junction SWNT thin films with excellent environmental stability.

Original languageEnglish
Pages (from-to)11903-11908
Number of pages6
JournalJournal of Physical Chemistry C
Volume119
Issue number21
DOIs
Publication statusPublished - 2015 May 28

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Energy(all)
  • Physical and Theoretical Chemistry
  • Surfaces, Coatings and Films

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