Korean Journal of Materials Research (한국재료학회지)

Materials Research Society of Korea (한국재료학회)
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Effect of SiO2 Layer of Si Substrate on the Growth of Multiwall-Carbon Nanotubes

실리콘 기판의 산화층이 다중벽 탄소나노튜브 성장에 미치는 영향

  • Kim, Geum-Chae (Department of Nano Systems Engineering, Center for Nano Manufacturing, Inje University) ;
  • Lee, Soo-Kyoung (Department of Nano Systems Engineering, Center for Nano Manufacturing, Inje University) ;
  • Kim, Sang-Hyo (Department of Nano Systems Engineering, Center for Nano Manufacturing, Inje University) ;
  • Hwang, Sook-Hyun (Department of Nano Systems Engineering, Center for Nano Manufacturing, Inje University) ;
  • Choi, Hyon-Kwang (Department of Nano Systems Engineering, Center for Nano Manufacturing, Inje University) ;
  • Jeon, Min-Hyon (Department of Nano Systems Engineering, Center for Nano Manufacturing, Inje University)
  • 김금채 (인제대학교 나노시스템공학과 나노메뉴팩쳐링연구소) ;
  • 이수경 (인제대학교 나노시스템공학과 나노메뉴팩쳐링연구소) ;
  • 김상효 (인제대학교 나노시스템공학과 나노메뉴팩쳐링연구소) ;
  • 황숙현 (인제대학교 나노시스템공학과 나노메뉴팩쳐링연구소) ;
  • ;
  • 전민현 (인제대학교 나노시스템공학과 나노메뉴팩쳐링연구소)
  • Published : 2009.01.31
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Abstract

Multi-walled carbon nanotubes (MWNTs) were synthesized on different substrates (bare Si and $SiO_2$/Si substrate) to investigate dye-sensitized solar cell (DSSC) applications as counter electrode materials. The synthesis of MWNTs samples used identical conditions of a Fe catalyst created by thermal chemical vapor deposition at $900^{\circ}C$. It was found that the diameter of the MWNTs on the Si substrate sample is approximately $5{\sim}10nm$ larger than that of a $SiO_2$/Si substrate sample. Moreover, MWNTs on a Si substrate sample were well-crystallized in terms of their Raman spectrum. In addition, the MWNTs on Si substrate sample show an enhanced redox reaction, as observed through a smaller interface resistance and faster reaction rates in the EIS spectrum. The results show that DSSCs with a MWNT counter electrode on a bare Si substrate sample demonstrate energy conversion efficiency in excess of 1.4 %.

Keywords

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