High performance dielectric film using SiO2-coated short carbon nanotubes in BaTiO3-polymer composite

نویسندگان

  • M. J. Bae
  • J.-Y. Kim
  • S. H. Park
  • T. Jeong
  • S. Song
  • J. Lee
  • I. Han
  • D. Jung
  • J. B. Yoo
  • C. Liu
  • S. Yu
چکیده

Three-phase composite films consisting of BaTiO3/singlewalled carbon nanotube (SWCNT)/polymer were fabricated. The SWCNTs were shortened and coated with SiO2 to minimise the conducting paths of the SWCNTs in the film. The film showed a dielectric constant and dielectric loss of 92 and 0.031, respectively, at a frequency of 1 kHz. The SiO2-coated short SWCNTs can play important roles in enhancing the capacitance by space charge polarisation at the interface between the SWCNTs and SiO2, and reducing the dielectric loss.

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تاریخ انتشار 2011