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Abstract

Single-walled carbon nanotubes (SWCNTs) were grown from spin coated Co catalyst thin films using the alcohol catalytic chemical vapor deposition (ACCVD) method for different CVD processing temperatures and at a fixed 15 min CVD processing time. The presence of SWCNT was confirmed by Raman radial breathing mode peak confirmation. The Raman intensity of G band over D band for the as-grown SWCNTs was decreased with increasing CVD processing temperatures. Raman intensity analysis in the radial breathing mode region shows a relatively wide distribution of SWCNTs grown for all CVD processing temperatures, but, owing similar trend of G band and D band intensity decrement as increasing the CVD processing temperatures. In this paper, it was suggested that Co catalyst poisoning and SWCNT burning occurred when the CVD processing temperature was more than 700 °C. The structural properties of the SWCNTs grown have been investigated by Raman spectroscopy with 532 nm laser excitation.