DC Field | Value | Language |
---|---|---|
dc.contributor.author | Lee, Geonyeop | - |
dc.contributor.author | Yang, Gwangseok | - |
dc.contributor.author | Cho, Ara | - |
dc.contributor.author | HAN, JEONG WOO | - |
dc.contributor.author | Kim, Jihyun | - |
dc.date.accessioned | 2021-11-21T05:51:38Z | - |
dc.date.available | 2021-11-21T05:51:38Z | - |
dc.date.created | 2021-11-19 | - |
dc.date.issued | 2016-06-07 | - |
dc.identifier.issn | 1463-9076 | - |
dc.identifier.uri | https://oasis.postech.ac.kr/handle/2014.oak/107576 | - |
dc.description.abstract | We report defect-engineered graphene chemical sensors with ultrahigh sensitivity (e.g., 33% improvement in NO2 sensing and 614% improvement in NH3 sensing). A conventional reactive ion etching system was used to introduce the defects in a controlled manner. The sensitivity of graphene-based chemical sensors increased with increasing defect density until the vacancy-dominant region was reached. In addition, the mechanism of gas sensing was systematically investigated via experiments and density functional theory calculations, which indicated that the vacancy defect is a major contributing factor to the enhanced sensitivity. This study revealed that defect engineering in graphene has significant potential for fabricating ultra-sensitive graphene chemical sensors. We report defect-engineered graphene chemical sensors with ultrahigh sensitivity (e.g., 33% improvement in NO2 sensing and 614% improvement in NH3 sensing). A conventional reactive ion etching system was used to introduce the defects in a controlled manner. The sensitivity of graphene-based chemical sensors increased with increasing defect density until the vacancy-dominant region was reached. In addition, the mechanism of gas sensing was systematically investigated via experiments and density functional theory calculations, which indicated that the vacancy defect is a major contributing factor to the enhanced sensitivity. This study revealed that defect engineering in graphene has significant potential for fabricating ultra-sensitive graphene chemical sensors. | - |
dc.language | English | - |
dc.publisher | Royal Society of Chemistry | - |
dc.relation.isPartOf | Physical Chemistry Chemical Physics | - |
dc.title | Defect-engineered graphene chemical sensors with ultrahigh sensitivity | - |
dc.type | Article | - |
dc.identifier.doi | 10.1039/c5cp04422g | - |
dc.type.rims | ART | - |
dc.identifier.bibliographicCitation | Physical Chemistry Chemical Physics, v.18, no.21, pp.14198 - 14204 | - |
dc.identifier.wosid | 000378102700008 | - |
dc.citation.endPage | 14204 | - |
dc.citation.number | 21 | - |
dc.citation.startPage | 14198 | - |
dc.citation.title | Physical Chemistry Chemical Physics | - |
dc.citation.volume | 18 | - |
dc.contributor.affiliatedAuthor | HAN, JEONG WOO | - |
dc.identifier.scopusid | 2-s2.0-84971261493 | - |
dc.description.journalClass | 1 | - |
dc.description.journalClass | 1 | - |
dc.description.isOpenAccess | N | - |
dc.type.docType | Article | - |
dc.relation.journalWebOfScienceCategory | Chemistry, Physical | - |
dc.relation.journalWebOfScienceCategory | Physics, Atomic, Molecular & Chemical | - |
dc.description.journalRegisteredClass | scie | - |
dc.description.journalRegisteredClass | scopus | - |
dc.relation.journalResearchArea | Chemistry | - |
dc.relation.journalResearchArea | Physics | - |
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