DOI QR코드

DOI QR Code

Gas Sensing Characteristics of Sb-doped SnO2 Nanofibers

  • Choi, Joong-Ki (Department of Materials Science and Engineering, Korea University) ;
  • Hwang, In-Sung (Department of Materials Science and Engineering, Korea University) ;
  • Kim, Sun-Jung (Department of Materials Science and Engineering, Korea University) ;
  • Park, Joon-Shik (Convergence Sensor and Device Research Center, Korea Electronics Technology Institute) ;
  • Park, Soon-Sup (Convergence Sensor and Device Research Center, Korea Electronics Technology Institute) ;
  • Dong, Ki-Young (Display and Nanosystem laboratory, college of engineering) ;
  • Ju, Byeong-Kwon (Display and Nanosystem laboratory, college of engineering) ;
  • Lee, Jong-Heun (Department of Materials Science and Engineering, Korea University)
  • 투고 : 2010.03.02
  • 심사 : 2010.08.02
  • 발행 : 2011.01.31

초록

Undoped and Sb-doped $SnO_2$ nanofibers were prepared by electrospinning and their responses to $H_2$, CO, $CH_4$, $C_3H_8$, and $C_2H_5OH$ were measured. In the undoped $SnO_2$ nanofibers, the gas response ($R_a/R_g$, $R_a$: resistance in air, $R_g$: resistance in gas) to 100 ppm $C_2H_5OH$ was very high(33.9), while that to the other gases ranged from 1.6 to 2.2. By doping with 2.65 wt% Sb, the response to 100 ppm $C_2H_5OH$ was decreased to 4.5, whereas the response to $H_2$ was increased to 3.0. This demonstrates the possibility of detecting a high $H_2$ concentration with minimum interference from $C_2H_5OH$ and the potential to control the gas selectivity by Sb doping.

키워드

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