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DC Field | Value | Language |
---|---|---|
dc.citation.endPage | 17015 | - |
dc.citation.number | 50 | - |
dc.citation.startPage | 17012 | - |
dc.citation.title | JOURNAL OF THE AMERICAN CHEMICAL SOCIETY | - |
dc.citation.volume | 130 | - |
dc.contributor.author | Yan, Binghai | - |
dc.contributor.author | Park, Changwon | - |
dc.contributor.author | Ihm, Jisoon | - |
dc.contributor.author | Zhou, Gang | - |
dc.contributor.author | Duan, Wenhui | - |
dc.contributor.author | Park, Noejung | - |
dc.date.accessioned | 2023-12-22T08:14:21Z | - |
dc.date.available | 2023-12-22T08:14:21Z | - |
dc.date.created | 2014-11-10 | - |
dc.date.issued | 2008-12 | - |
dc.description.abstract | We investigate the electronic structures and electron emission properties of alkali-doped boron-nitride nanotubes (BNNTs) using density-functional theory calculations. We find that the nearly free-electron (NFE) state of the BNNT couples with the alkali atom states, giving rise to metallic states near the Fermi level. Unlike the cases of potassium-doped carbon nanotubes, not only the s but the d orbital state substantially takes part in the hybridization, and the resulting metallic states preserve the free-electron-like energy dispersion. Through first-principles electron dynamic simulations under applied fields, it is shown that the alkali-doped BNNT can generate an emission current 2 orders of magnitude larger than the carbon nanotube. The nodeless wave function at the Fermi level, together with the lowered work function, constitutes the major advantage of the alkali-doped BNNT in electron emission. We propose that the alkali-doped BNNT should be an excellent electron emitter in terms of the large emission current as well as its chemical and mechanical stability. | - |
dc.identifier.bibliographicCitation | JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, v.130, no.50, pp.17012 - 17015 | - |
dc.identifier.doi | 10.1021/ja805557g | - |
dc.identifier.issn | 0002-7863 | - |
dc.identifier.scopusid | 2-s2.0-58049209874 | - |
dc.identifier.uri | https://scholarworks.unist.ac.kr/handle/201301/8544 | - |
dc.identifier.url | http://www.scopus.com/inward/record.url?partnerID=HzOxMe3b&scp=58049209874 | - |
dc.identifier.wosid | 000263320400040 | - |
dc.language | 영어 | - |
dc.publisher | AMER CHEMICAL SOC | - |
dc.title | Electron Emission Originated from Free-Electron-like States of Alkali-Doped Boron-Nitride Nanotubes | - |
dc.type | Article | - |
dc.description.journalRegisteredClass | scopus | - |
dc.subject.keywordPlus | MULTIWALLED CARBON NANOTUBES | - |
dc.subject.keywordPlus | FIELD-EMISSION | - |
dc.subject.keywordPlus | TOTAL-ENERGY | - |
dc.subject.keywordPlus | EMITTERS | - |
dc.subject.keywordPlus | STABILITY | - |
dc.subject.keywordPlus | ATOMS | - |
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