Structural and electronic characteristics induced by carbonization control of mesoporous carbon nanofibers

Ji Eun Im, Min Soo Son, Jing Li, Kyung Hwa Yoo, Yong Rok Kim

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3 Citations (Scopus)

Abstract

Mesoporous carbon nanofibers (MCNFs) are fabricated at various carbonization temperatures. The carbonization temperature plays a key role in determining the structural characteristics and the electronic properties of MCNFs. The band gap energies of MCNFs are estimated to be 0.080, 0.036, and 0.014 eV at the carbonization temperatures of 600, 900, and 1200 °C, respectively. The MCNF carbonized at 1200 °C has the highest stacking height of graphene planes (Lc) and the largest number of graphene layers (Lc/d). Raman data show the intensity ratio of D to G peaks, which is related to the graphene size (La). La increases with increasing the carbonization temperature. In addition, as the carbonization temperature increases, the conductivity of MCNF increases due to larges values of Lc, La, and Lc/d.

Original languageEnglish
Pages (from-to)9-14
Number of pages6
JournalMaterials Science and Engineering B: Solid-State Materials for Advanced Technology
Volume187
DOIs
Publication statusPublished - 2014 Sep

Bibliographical note

Funding Information:
This work was supported by the National Research Foundation of Korea Grant funded by the Korean Government (No. 2012M3A9C6049729 ). Prof. K.-H.Y. work has been financially supported by Basic Science Research Program through the National Research Foundation of Korea (NRF) funded by the Ministry of Education, Science and Technology (Grant No. 2011-0017486 ).

All Science Journal Classification (ASJC) codes

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering

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