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Sb-첨가 SnO2 나노선 네트워크를 이용한 고속응답 가스센서Fast Responding Gas Sensors Using Sb-Doped SnO2 Nanowire Networks
- Other Titles
- Fast Responding Gas Sensors Using Sb-Doped SnO2 Nanowire Networks
- Issue Date
- 2013
- Publisher
- 한국센서학회
- Keywords
- Sb-SnO2; Nanowire networks; Gas sensors; Sensor resistance; Recovery speed; Selectivity
- Citation
- 센서학회지, v.22, no.4, pp.302 - 307
- Indexed
- KCI
- Journal Title
- 센서학회지
- Volume
- 22
- Number
- 4
- Start Page
- 302
- End Page
- 307
- ISSN
- 1225-5475
- Abstract
- The Sb-doped SnO2 nanowire network sensors were prepared by thermal evaporation of the mixtures between tin and antimony powders. Pure SnO2 nanowire networks showed high sensor resistance in air (99 M ), similar gas responses to 4 diffferent gases (5 ppm C2H5OH, CO, H2, and trimethylamine), and very sluggish recovery speed (90% recovery time > 800 s). In contrast, 2 wt% Sb-doped SnO2 showed the selective detection toward C2H5OH and trimethylamine, relatively low resistance (176 k ) for facile measurement, and ultrafast recovery speed (90% recovery times: 6 -18 s). The change of gas sensing charactersitics by Sb doping was discussed in relation to gas sensing mechanism.
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