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Acceptor doping of single-walled carbon nanotubes by encapsulation of zinc halogenides

Author

Listed:
  • M. Kharlamova
  • L. Yashina
  • A. Volykhov
  • J. Niu
  • V. Neudachina
  • M. Brzhezinskaya
  • T. Zyubina
  • A. Belogorokhov
  • A. Eliseev

Abstract

To modify the electronic properties of single-walled carbon nanotubes (SWCNTs), ZnX 2 @SWCNT (X=Cl, Br, I) nanostructures were prepared by capillary filling of 1.4–1.6 nm single-walled carbon nanotubes (SWCNT) with zinc halogenide melts. The loading factor is estimated as 30% for ZnCl 2 and approximately 60% for ZnBr 2 and ZnI 2 . Well-ordered 1D crystals were observed by TEM only for ZnI 2 @SWCNT. We propose two possible atomic structures of the 1D crystals, (Zn 4 I 7 ) n and less stable (Zn 4 I 9 ) n . According to the optical absorption and photoemission data, there is a charge transfer from the nanotube to the filler for all ZnX 2 @SWCNT nanostructures. The results of the DFT PW-GGA modeling indicate that the acceptor properties correspond to (Zn 4 I 9 ) n only. Copyright EDP Sciences, SIF, Springer-Verlag Berlin Heidelberg 2012

Suggested Citation

  • M. Kharlamova & L. Yashina & A. Volykhov & J. Niu & V. Neudachina & M. Brzhezinskaya & T. Zyubina & A. Belogorokhov & A. Eliseev, 2012. "Acceptor doping of single-walled carbon nanotubes by encapsulation of zinc halogenides," The European Physical Journal B: Condensed Matter and Complex Systems, Springer;EDP Sciences, vol. 85(1), pages 1-8, January.
    • Handle: RePEc:spr:eurphb:v:85:y:2012:i:1:p:1-8:10.1140/epjb/e2011-20457-6
    DOI: 10.1140/epjb/e2011-20457-6
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