Paper Information

Journal:   JOURNAL OF THEORETICAL AND APPLIED PHYSICS (IRANIAN PHYSICAL JOURNAL)   JUNE 2010 , Volume 4 , Number 1; Page(s) 1 To 5.
 
Paper: 

STUDY OF AU SYNTHESIZED SWNTS MECHANISM BY IN-SITU SPECTROSCOPY

 
 
Author(s):  GHORANNEVIS Z.*, KATO T., KANEKO T., HATAKEYAMA R.
 
* DEPARTMENT OF ELECTRONIC ENGINEERING, TOHOKU UNIVERSITY, SENDAI, JAPAN
 
Abstract: 
Optical emission spectra (OES) of a CH4-H2 plasma during synthesis of single walled carbon nanotubes (SWNTs) using an Au catalyst were in-situ examined for the purpose of understanding the formation mechanism of SWNTs over the Au catalyst. From OES analysis, it was shown that changing the hydrogen related radicals, which are regarded as etching species in SWNTs growth by varying the H2 flow rate made effects on the diameter and yield of the SWNTs. Also OES investigations during the SWNTs growth suggest that CH/Ha can be useful for finding the optimum condition for the SWNTs growth by plasma chemical vapor deposition (PCVD) method.
 
Keyword(s): SWNTS, CATALYTIC ACTIVITY, ETCHING EFFECT, OES, PCVD
 
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