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논문 기본 정보

저자정보
(Gangneung-Wonju National University) (Gangneung-Wonju National University) (Gangneung-Wonju National University) (Gangneung-Wonju National University) (Gangneung-Wonju National University) (Gangneung-Wonju National University) (Gangneung-Wonju National University)
저널정보
대한전자공학회 JOURNAL OF SEMICONDUCTOR TECHNOLOGY AND SCIENCE Journal of Semiconductor Technology and Science Vol.25 No.6
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    초록·키워드

    Methane (CH₄) is a colorless, odorless, and highly flammable gas, posing significant health and environmental risks due to its asphyxiant properties and increasing annual emissions. Accurate CH₄ monitoring is essential, especially in confined environments, yet current detection solutions remain limited by sensitivity and recovery issues. We fabricated an effective and simple methane gas sensor based on lithium-ion (Li+) decorated single-walled carbon nanotube (SWCNTs) networks. By leveraging the unique interaction between Li+ ions and CH₄ molecules, as well as the exceptional conductivity and surface area of SWCNTs, the proposed sensor demonstrates a 157% improvement in sensitivity and a substantial increase in recovery compared to undecorated SWCNT-based devices. The device demonstrated improved sensitivity and recovery across a range of methane concentrations and humidity levels, suggesting potential for further development toward industrial, environmental, and IoT methane detection applications.

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