| 학회 |
한국재료학회 |
| 학술대회 |
2021년 가을 (11/24 ~ 11/26, 경주 라한호텔) |
| 권호 |
27권 2호 |
| 발표분야 |
E. 환경/센서 재료 분과 |
| 제목 |
Confirmation of NO2 Detection at Low Temperature in SnO2 Nanowires by Pt Deposition and Bi2O3 Branching |
| 초록 |
Recently, as air pollution becomes more serious, the use of gas sensors is increasing. Among many sensing materials, a metal oxide semiconductor having a branched structure such as a branched nanowire has not yet been studied in the sensor field. Bi2O3 is not well-received as a gas-responsive material due to its high cost to synthesize and low electron mobility. SnO2 also suffers from gas selectivity problems. However, combining the two materials in the branched form with a metallic material can be a method to improve the gas detection performance. In our laboratory, SnO2 NW is grown, Bi2O3 branches are grown through the VLS method, and finally Pt is deposited through sputtering. Using the material synthesized in this way, a gas sensor device was fabricated and gas detection characteristics were investigated. This study allowed us to see the high responsiveness of NO2 gas at lower temperatures than other devices. It was confirmed that Pt-deposited Bi2O3 branched SnO2 NWs showed higher response in the 50-100°C range. |
| 저자 |
유동재, 신가윤, 엄완식, 강석우, 김은비, 김현우
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| 소속 |
한양대 |
| 키워드 |
BI<SUB>2</SUB>O<SUB>3</SUB>-SnO<SUB>2</SUB>; Branched nanowire; Pt nanoparticle; Gas sensor; NO<SUB>2</SUB>; Sensing mechanism
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| E-Mail |
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