Nano-Micro Letters

Semiconducting single-walled carbon nanotubes syn- thesized by S-doping

Z. J. Li, L. Wang, Y. J. Su, P. Liu, Y. F. Zhang* Abstract
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Nano-Micro Letters, , Volume 1, Issue 1, pp 9-13
Publication Date (Web): October 15, 2009 (Article)




Figure 1 (a) A typical SEM image of as-synthesized S-doped SWNTs. (b) HRTEM image of as-synthesized S-doped SWNTs. (c) XPS spectrum of the as-synthesized S-doped SWNTs. (d) XRD patterns of S-doped and undoped SWNTs.

An approach was presented for synthesis of semiconducting single-walled carbon nanotubes (SWNTs) by sulfur (S) doping with the method of graphite arc discharge. Raman spectroscopy, UV-vis-NIR absorption spectroscopy and electronic properties measurements indicated the semconducting properties of the SWNTs samples. Simulant calculation indicated that S doping could induce convertion of metallic SWNTs into semiconducting ones. This strategy may pave a way for the direct synthesis of pure semiconducting SWNTs.



S-doping; Single-wall; Carbon nanotubes; Semiconducting; Arc discharge


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