화학공학소재연구정보센터
Korean Journal of Materials Research, Vol.13, No.2, 106-110, February, 2003
입자 크기에 따른 ITO 후막 센서의 가스 감지 특성
Gas Sensing Properties of Nanocrystalline ITO Thick Films with Different Particle Sizes
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Nano-sized powders of Indium Tin Oxide(ITO) were synthesized by a coprecipitation method. In order to investigate the gas sensing characteristics in the nanocrystalline ITO thick films with various particle sizes, ITO powders with the average particle diameter of 15, 30, and 70 nm respectively were synthesized. And the sensitivity of ITO thick films was measured upon exposure to a target gas( C 2 H 5 /OH) and some other Volatile Organic Compounds(VOCs), such as, toluene, methanol, benzene, chloroform. As a result, ITO thick films had high sensitivity for ethanol and higher sensitivity with smaller particle size.
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