Fabrication and Characteristics of SnO2 Thick Film Devices for Detection of NO2

NO2 감지용 SnO2 후막소자의 제작 및 특성

  • Sohn, Jong Rack (Dept. of Industrial Chemistry, Engineering College, Kyungpook National University) ;
  • Han, Jong Soo (Dept. of Industrial Chemistry, Engineering College, Kyungpook National University)
  • 손종락 (경북대학교 공과대학 공업화학과) ;
  • 한종수 (경북대학교 공과대학 공업화학과)
  • Received : 1997.02.06
  • Accepted : 1997.03.14
  • Published : 1997.04.10

Abstract

$SnO_2$ as raw material of sensor for $NO_2$ detection was prepared by precipitating $SnCl_4$ solution with aqueous ammonia followed by calcining in air. The characterization of $SnO_2$ was carried out using FT-IR and XRD, and $SnO_2$ thick film sensor was fabricated by screen-printing method. The particle size of $SnO_2$ calcined at higher temperature increased due to the growth of crystalline. $SnO_2$ sensor fabricated by using $SnO_2$ sample calcined at $1000^{\circ}C$ followed by heat treatment at $700^{\circ}C$ exhibited excellent sensing characteristics and selectivity for $NO_2$ gas at the operating temperature of $250^{\circ}C$.

Keywords

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