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Hydrogen sensor of SWNT-PdOx system using the vacuum filtering deposition method

진공여과증착법을 이용한 SWNT-PdOx계 수소센서

  • Received : 2010.01.08
  • Accepted : 2010.02.17
  • Published : 2010.03.31

Abstract

Hydrogen gas sensors were fabricated using $PdO_x$ loaded with SWNTs. The nanoparticle powders of $SWNT_s-PdO_x$ composite were deposited on Si wafer substrates by a vacuum filtering deposition method. The fabricated sensors were tested against hydrogen gas. The composition ratio that exhibited the highest response to hydrogen gases was SWNTs : $PdO_x$ = 98 : 2 in wt% ratio at operating temperature of about $150^{\circ}C$. The response and recovery times were shorter than 1.0 min. in presence of 1000 ppm hydrogen.

Keywords

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