ETRI-Knowledge Sharing Plaform

KOREAN
논문 검색
Type SCI
Year ~ Keyword

Detail

Journal Article Fabrication and Characterization of Semiconducting ZnO nanofiber for Advanced Environmental Sensing
Cited 1 time in scopus Download 0 time Share share facebook twitter linkedin kakaostory
Authors
Tae Hyoung Zyung, Su-Jae Lee, Jin-Ah Park, Jae Hyun Moon
Issue Date
2009-10
Citation
Electrochemical and Solid-State Letters, v.16, no.12, pp.87-93
ISSN
1099-0062
Publisher
Electrochemical Society (ECS)
Language
English
Type
Journal Article
DOI
https://dx.doi.org/10.1149/1.2985847
Project Code
08ZB1200, Future Technology Researches in the Fields of Informations and Telecommunications, Taehyoung Zyung
Abstract
Nanostructured semiconducting metal oxides offer an extremely high surface/volume ratio which have detecting sensitivity of part per million and even below, dynamic range and decrease the response time by more than 10-fold in comparison with thin film materials. Motivated by the recent development in fabricating and synthesizing nano-sized metal oxides, we have used an electrospinning method to produce semiconducting ZnO nanofibers for advanced environmental sensing. ZnO/PVP composite fiber mats were directly electrospun onto a SiO2/Si at 120°C, then calcined at 600°C. Polycrystalline wurtzite ZnO nanofibers of diameter in 35-70 nm were obtained. The CO gas sensing performances have been evaluated in a CO concentration range of 10??25 ppm. The resistances of ZnO nanofibers were observed to decrease upon exposure to CO. This is attributed to the reducing nature of CO. which reacts with O to release an extra electron. © The Electrochemical Society.
KSP Keywords
CO concentration, CO gas sensing, Composite fibers, Concentration range, Detecting sensitivity, Environmental sensing, Fiber mats, Metal-oxide(MOX), Semiconducting metal oxides, Thin film materials, Volume ratio