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학술지 Semiconducting ZnO Nanofibers as Gas Sensors and Gas Response Improvement by SnO2 Coating
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저자
문제현, 박진아, 이수재, 정태형
발행일
200912
출처
ETRI Journal, v.31 no.6, pp.636-641
ISSN
1225-6463
출판사
한국전자통신연구원 (ETRI)
DOI
https://dx.doi.org/10.4218/etrij.09.1209.0004
협약과제
09ZB1200, 정보통신 미래신기술연구사업, 정태형
초록
ZnO nanofibers were electro-spun from a solution containing poly 4-vinyl phenol and Zn acetate dihydrate. The calcination process of the ZnO/PVP composite nanofibers brought forth a random network of polycrystalline w체rtzite ZnO nanofibers of 30 nm to 70 nm in diameter. The electrical properties of the ZnO nanofibers were governed by the grain boundaries. To investigate possible applications of the ZnO nanofibers, their CO and NO 2 gas sensing responses are demonstrated. In particular, the SnO 2-deposited ZnO nanofibers exhibit a remarkable gas sensing response to NO2 gas as low as 400 ppb. Oxide nanofibers emerge as a new proposition for oxide-based gas sensors. Copyright © 2009 ETRI.
키워드
Electrical properties, Gas sensor, Nanofiber, Semiconducting oxide
KSP 제안 키워드
4-vinyl phenol(Poly), As 4, CO and NO, Calcination process, Composite nanofibers, Electro-spun, Gas response, Gas sensing response, Semiconducting Oxide, SnO 2, ZnO nanofibers