Effect of O-vacancy defects on the Schottky barrier heights in Ni/SiO2 and Ni/HfO2 interfaces

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dc.contributor.authorNoh, Hyeon-Kyunko
dc.contributor.authorOh, Young-Junko
dc.contributor.authorChang, Kee-Jooko
dc.date.accessioned2013-03-12T10:25:22Z-
dc.date.available2013-03-12T10:25:22Z-
dc.date.created2012-08-21-
dc.date.created2012-08-21-
dc.date.issued2012-08-
dc.identifier.citationPHYSICA B-CONDENSED MATTER, v.407, no.15, pp.2907 - 2910-
dc.identifier.issn0921-4526-
dc.identifier.urihttp://hdl.handle.net/10203/102033-
dc.description.abstractWe perform first-principles density functional calculations to study the electronic structure of Ni/HfO2 and Ni/SiO2 interfaces and the effect of O-vacancy (V-O) defects on the Schottky barrier height and the effective work function. We generate two interface models in which Ni is placed on O-terminated HfO2 (1 0 0) and a-quartz (1 0 0) surfaces. As the concentration of V-O defects at the interface increases, the p-type Schottky barrier height tends to increase in the Ni/HfO2 interface, due to the reduction of interface dipoles, whereas it is less affected in the Ni/SiO2 interface. (C) 2011 Elsevier B.V. All rights reserved.-
dc.languageEnglish-
dc.publisherELSEVIER SCIENCE BV-
dc.subjectSURFACE STATES-
dc.subjectWORK FUNCTION-
dc.titleEffect of O-vacancy defects on the Schottky barrier heights in Ni/SiO2 and Ni/HfO2 interfaces-
dc.typeArticle-
dc.identifier.wosid000305790800022-
dc.identifier.scopusid2-s2.0-84862008167-
dc.type.rimsART-
dc.citation.volume407-
dc.citation.issue15-
dc.citation.beginningpage2907-
dc.citation.endingpage2910-
dc.citation.publicationnamePHYSICA B-CONDENSED MATTER-
dc.identifier.doi10.1016/j.physb.2011.08.079-
dc.embargo.liftdate9999-12-31-
dc.embargo.terms9999-12-31-
dc.contributor.localauthorChang, Kee-Joo-
dc.type.journalArticleArticle; Proceedings Paper-
dc.subject.keywordAuthorNi work function-
dc.subject.keywordAuthorMetal gate-
dc.subject.keywordAuthorHfO2-
dc.subject.keywordAuthorSchottky barrier-
dc.subject.keywordPlusSURFACE STATES-
dc.subject.keywordPlusWORK FUNCTION-
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