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DC Field | Value | Language |
---|---|---|
dc.citation.endPage | 84964 | - |
dc.citation.number | 88 | - |
dc.citation.startPage | 84959 | - |
dc.citation.title | RSC ADVANCES | - |
dc.citation.volume | 6 | - |
dc.contributor.author | Park, Heemin | - |
dc.contributor.author | Choi, Seongsoo | - |
dc.contributor.author | Lee, Paengro | - |
dc.contributor.author | Kim, Jingul | - |
dc.contributor.author | Ryu, Mintae | - |
dc.contributor.author | Kim, Kwang S. | - |
dc.contributor.author | Chung, Jinwook | - |
dc.date.accessioned | 2023-12-21T23:13:47Z | - |
dc.date.available | 2023-12-21T23:13:47Z | - |
dc.date.created | 2016-09-23 | - |
dc.date.issued | 2016-09 | - |
dc.description.abstract | We report that the doping of energetic nitrogen cations (N2 +) on graphene effectively controls the local N-C bonding structures and the π-band of graphene critically depending on ion energy Ek (100 eV ≤ Ek ≤ 500 eV) by using a combined study of photoemission spectroscopy and density functional theory (DFT) calculations. With increasing Ek, we find a phase transformation of the N-C bonding structures from a graphitic phase where nitrogen substitutes carbon to a pyridinic phase where nitrogen loses one of its bonding arms, with a critical energy Eck = 100 eV that separates the two phases. The N2 +-induced changes in the π-band with varying Ek indicate an n-doping effect in the graphitic phase for Ek < Eck but a p-doping effect for the pyridinic graphene for Ek > Eck. We further show that one may control the electron charge density of graphene by two orders of magnitude by varying Ek of N2 + ions within the energy range adopted. Our DFT-based band calculations reproduce the distinct doping effects observed in the π-band of the N2 +-doped graphene and provide an orbital origin of the different doping types. We thus demonstrate that the doping type and electron number density in the N2 + ion-doped SLG can be artificially fine-controlled by adjusting the kinetic energy of incoming N2 + ions. | - |
dc.identifier.bibliographicCitation | RSC ADVANCES, v.6, no.88, pp.84959 - 84964 | - |
dc.identifier.doi | 10.1039/c6ra19511c | - |
dc.identifier.issn | 2046-2069 | - |
dc.identifier.scopusid | 2-s2.0-84987638593 | - |
dc.identifier.uri | https://scholarworks.unist.ac.kr/handle/201301/20474 | - |
dc.identifier.url | http://pubs.rsc.org/en/Content/ArticleLanding/2016/RA/C6RA19511C#!divAbstract | - |
dc.identifier.wosid | 000384139000046 | - |
dc.language | 영어 | - |
dc.publisher | ROYAL SOC CHEMISTRY | - |
dc.title | Band and bonding characteristics of N2 + ion-doped graphene | - |
dc.type | Article | - |
dc.description.isOpenAccess | FALSE | - |
dc.relation.journalWebOfScienceCategory | Chemistry, Multidisciplinary | - |
dc.relation.journalResearchArea | Chemistry | - |
dc.description.journalRegisteredClass | scie | - |
dc.description.journalRegisteredClass | scopus | - |
dc.subject.keywordPlus | RECENT PROGRESS | - |
dc.subject.keywordPlus | NITROGEN | - |
dc.subject.keywordPlus | DENSITY | - |
dc.subject.keywordPlus | EFFICIENT | - |
dc.subject.keywordPlus | IMPLANTATION | - |
dc.subject.keywordPlus | MONOLAYER | - |
dc.subject.keywordPlus | ATOMS | - |
dc.subject.keywordPlus | GAS | - |
dc.subject.keywordPlus | SET | - |
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