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학술지 ZnO Nanobarbed Fibers: Fabrication, Sensing NO2 Gas, and their Sensing Mechanism
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저자
이현욱, 안균, 이수재, 김종필, 김형규, 정세영, 조채룡
발행일
201105
출처
Applied Physics Letters, v.98 no.19, pp.1-3
ISSN
0003-6951
출판사
American Institute of Physics (AIP)
DOI
https://dx.doi.org/10.1063/1.3590202
협약과제
09ZH1300, ETRI 연구역량 강화를 위한 R&D체계 구축 및 Seed형 기술개발을 위한 창의형 연구 사업, 현창희
초록
ZnO nanobarbed fibers (NBFs) are synthesized by the epitaxial growth of 1-D ZnO nanorods (NRs) on ZnO nanofibers (NFs) via electrospinning and chemical bath deposition. The change in resistance of the NBFs in the presence or absence of a gas was explained using the surface depletion model and modified grain boundary model, in which the junction points of the NFs and NRs are considered. The NBF structure showed extraordinary NO2 sensing performance for gas concentrations up to 30 ppb. This indicates that NBF structures have great potential for use as gas sensing materials. © 2011 American Institute of Physics.
KSP 제안 키워드
Boundary model, Change in resistance, Chemical bath deposition(CBD), Gas sensing materials, Sensing Performance, Sensing mechanism, ZnO nanofibers, ZnO nanorod, epitaxial growth, gas concentration, grain boundaries