| 학회 |
한국재료학회 |
| 학술대회 |
2017년 봄 (05/17 ~ 05/19, 목포 현대호텔) |
| 권호 |
23권 1호 |
| 발표분야 |
E. 환경/센서 재료 분과 |
| 제목 |
Enhanced gas-sensing performances of honeycomb-like periodic porous LaFeO3 thin film chemiresistors |
| 초록 |
The perovskite oxides provide various compositional combinations between different oxides for tuning gas-sensing reaction and endowing rich oxygen deficiencies for preferable gas adsorption. In this study, a sacrificial colloidal template approach is exploited to fabricate crystalline ternary LaFeO3 perovskite porous thin films, by transferring a La3+–Fe3+ hybrid solution-dipped template onto a substrate and sequent heat treatment. The honeycomb-like LaFeO3 film consisted of monolayer periodic pore array is formed in a homogeneous layout with a single phase of perovskite. This periodic porous LaFeO3 film with p-type property exhibits a high gas response, fast response, trace detection capacity (50 ppb), and favorable ethanol selectivity. It exhibits enhanced sensing performances compared to those of a binary n-type Fe2O3 film and a dense LaFeO3 film. The enhanced ethanol sensing mechanism of honeycomb-like LaFeO3 periodic porous film is addressed. |
| 저자 |
윤지원, Zhengfei Dai, 이철순, 김보영, 곽창훈, 윤지욱, 정현묵, 이종흔
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| 소속 |
고려대 |
| 키워드 |
Metal oxide semiconductor gas sensor; LaFeO<SUB>3</SUB> thin fim
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| E-Mail |
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