Highly sensitive hydrogen detection of catalyst-free ZnO nanorod networks suspended by lithography-assisted growth
DC Field | Value | Language |
---|---|---|
dc.contributor.author | Huh, Junghwan | - |
dc.contributor.author | Park, Jonghyurk | - |
dc.contributor.author | Kim, Gyu Tae | - |
dc.contributor.author | Park, Jeong Young | - |
dc.date.accessioned | 2021-09-07T14:54:40Z | - |
dc.date.available | 2021-09-07T14:54:40Z | - |
dc.date.created | 2021-06-14 | - |
dc.date.issued | 2011-02-25 | - |
dc.identifier.issn | 0957-4484 | - |
dc.identifier.uri | https://scholar.korea.ac.kr/handle/2021.sw.korea/113041 | - |
dc.description.abstract | We have successfully demonstrated a ZnO nanorod-based 3D nanostructure to show a high sensitivity and very fast response/recovery to hydrogen gas. ZnO nanorods have been synthesized selectively over the pre-defined area at relatively low temperature using a simple self-catalytic solution process assisted by a lithographic method. The conductance of the ZnO nanorod device varies significantly as the concentration of the hydrogen is changed without any additive metal catalyst, revealing a high sensitivity to hydrogen gas. Its superior performance can be explained by the porous structure of its three-dimensional network and the enhanced surface reaction of the hydrogen molecules with the oxygen defects resulting from a high surface-to-volume ratio. It was found that the change of conductance follows a power law depending on the hydrogen concentration. A Langmuir isotherm following an ideal power law and a cross-over behavior of the activation energy with respect to hydrogen concentration were observed. This is a very novel and intriguing phenomenon on nanostructured materials, which suggests competitive surface reactions in ZnO nanorod gas sensors. S Online supplementary data available from stacks. iop.org/Nano/22/085502/mmedia | - |
dc.language | English | - |
dc.language.iso | en | - |
dc.publisher | IOP PUBLISHING LTD | - |
dc.subject | FIELD-EFFECT TRANSISTOR | - |
dc.subject | GAS SENSORS | - |
dc.subject | OPTICAL-PROPERTIES | - |
dc.subject | ZINC-OXIDE | - |
dc.subject | THIN-FILMS | - |
dc.subject | NANOWIRE | - |
dc.subject | ARRAYS | - |
dc.subject | NO2 | - |
dc.subject | H-2 | - |
dc.subject | CO | - |
dc.title | Highly sensitive hydrogen detection of catalyst-free ZnO nanorod networks suspended by lithography-assisted growth | - |
dc.type | Article | - |
dc.contributor.affiliatedAuthor | Kim, Gyu Tae | - |
dc.identifier.doi | 10.1088/0957-4484/22/8/085502 | - |
dc.identifier.scopusid | 2-s2.0-79251566147 | - |
dc.identifier.wosid | 000286317500008 | - |
dc.identifier.bibliographicCitation | NANOTECHNOLOGY, v.22, no.8 | - |
dc.relation.isPartOf | NANOTECHNOLOGY | - |
dc.citation.title | NANOTECHNOLOGY | - |
dc.citation.volume | 22 | - |
dc.citation.number | 8 | - |
dc.type.rims | ART | - |
dc.type.docType | Article | - |
dc.description.journalClass | 1 | - |
dc.description.journalRegisteredClass | scie | - |
dc.description.journalRegisteredClass | scopus | - |
dc.relation.journalResearchArea | Science & Technology - Other Topics | - |
dc.relation.journalResearchArea | Materials Science | - |
dc.relation.journalResearchArea | Physics | - |
dc.relation.journalWebOfScienceCategory | Nanoscience & Nanotechnology | - |
dc.relation.journalWebOfScienceCategory | Materials Science, Multidisciplinary | - |
dc.relation.journalWebOfScienceCategory | Physics, Applied | - |
dc.subject.keywordPlus | FIELD-EFFECT TRANSISTOR | - |
dc.subject.keywordPlus | GAS SENSORS | - |
dc.subject.keywordPlus | OPTICAL-PROPERTIES | - |
dc.subject.keywordPlus | ZINC-OXIDE | - |
dc.subject.keywordPlus | THIN-FILMS | - |
dc.subject.keywordPlus | NANOWIRE | - |
dc.subject.keywordPlus | ARRAYS | - |
dc.subject.keywordPlus | NO2 | - |
dc.subject.keywordPlus | H-2 | - |
dc.subject.keywordPlus | CO | - |
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