We propose an evaluation method of the relative content of single-walled carbon nanotubes (SWCNT) in SWCNT soot synthesized by arc discharge using UV-VIS-NIR absorption spectroscopy. In this method, we consider the absorbance of semiconducting and metallic SWCNTs together to calculate the relative content of SWCNTs with respect to a highly purified reference. Our method provides the more reliable and realistic evaluation of SWCNT content with respect to the whole carbonaceous content than the previously reported method.

• Ok-Hwan Cha(Advanced Photonics Research Institute, Gwangju Institute of Science and Technology)
• Mun-Seok Jeong(Advanced Photonics Research Institute, Gwangju Institute of Science and Technology)
• Clare C. Byeon(Advanced Photonics Research Institute, Gwangju Institute of Science and Technology)
• Hyun Jeong(Department of Semiconductor Science and Technology, Chonbuk National University)
• Jong-Hun Han(Energy & Nanomaterials Research Center, Korea Electronics Technology Institute)
• Young-Chul Choi(R&D Center, Hanwha Nanotech)
• Kay-Hyeok An(Material & Development Department, Jeonju Machinery Research Center)
• Kyung-Hui Oh(Korean Agency for Technology and Standards)
• Ki-Kang Kim(BK 21 Physics Division, Institute of Basic Science, Center for Nanotubes and Nanostructured Composites, Sungkyunkwan University)
• Young-Hee Lee(BK 21 Physics Division, Institute of Basic Science, Center for Nanotubes and Nanostructured Composites, Sungkyunkwan University)