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http://dx.doi.org/10.3740/MRSK.2004.14.3.224

Di(propylene glycol) Methylether (DPGME) Sensing Characteristics of SnO2-ZnO Sensor  

Cha G. Y (경북대학교 금속공학과)
Baek W. W (경북대학교 금속공학과)
Yun K. Y (경북대학교 금속공학과)
Lee S. T (경북대학교 금속공학과)
Choi N. J (경북대학교 전기전자공학부)
Lee D. D (경북대학교 전기전자공학부)
Huh J. S (경북대학교 금속공학과)
Publication Information
Korean Journal of Materials Research / v.14, no.3, 2004 , pp. 224-228 More about this Journal
Abstract
Respectively the powder made of ZnO added $SnO_2$ was prepared by coprecipitation method and the thick film gas sensor was fabricated by screen-printing technique, The morphology and phase of the powder and film was investigated by SEM and XRD. The specific area of the particle was linearly increased with ZnO contents. Target gas was di(propylene glycol) methylether ($CH_3$($OC_3$$H_{6}$ )$_2$OH, DPGME), which is simulant gas of blister gas. The gas sensing characteristics for DPGME were examined with flow type measurement system and the concentrations of target gas were controlled from 500 ppb to 1500 ppb. ZnO (2 wt%) added $SnO_2$ showed maximum sensitivity to DPGME at $300^{\circ}C$.
Keywords
$SnO_2$-ZnO; DPGME; nanocrystalline; gas sensor;
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