Zinc vacancy and oxygen interstitial in ZnO revealed by sequential annealing and electron irradiation

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dc.contributorAalto-yliopistofi
dc.contributorAalto Universityen
dc.contributor.authorKnutsen, K. E.
dc.contributor.authorGaleckas, A.
dc.contributor.authorZubiaga, A.
dc.contributor.authorTuomisto, Filip
dc.contributor.authorFarlow, G. C.
dc.contributor.authorSvensson, B. G.
dc.contributor.authorKuznetsov, A. Yu.
dc.contributor.departmentTeknillisen fysiikan laitosfi
dc.contributor.departmentDepartment of Applied Physicsen
dc.contributor.schoolPerustieteiden korkeakoulufi
dc.contributor.schoolSchool of Scienceen
dc.date.accessioned2015-08-26T09:01:46Z
dc.date.available2015-08-26T09:01:46Z
dc.date.issued2012
dc.description.abstractBy combining results from positron annihilation and photoluminescence spectroscopy with data from Hall effect measurements, the characteristic deep level emission centered at ∼1.75 eV and exhibiting an activation energy of thermal quenching of 11.5 meV is associated with the zinc vacancy. Further, a strong indication that oxygen interstitials act as a dominating acceptor is derived from the analysis of charge carrier losses induced by electron irradiation with variable energy below and above the threshold for Zn-atom displacement. We also demonstrate that the commonly observed green emission is related to an extrinsic acceptorlike impurity, which may be readily passivated by oxygen vacancies.en
dc.description.versionPeer revieweden
dc.format.extent121203/1-5
dc.format.mimetypeapplication/pdfen
dc.identifier.citationKnutsen, K. E. & Galeckas, A. & Zubiaga, A. & Tuomisto, Filip & Farlow, G. C. & Svensson, B. G. & Kuznetsov, A. Yu. 2012. Zinc vacancy and oxygen interstitial in ZnO revealed by sequential annealing and electron irradiation. Physical Review B. Volume 86, Issue 12. 121203/1-5. ISSN 1098-0121 (printed). DOI: 10.1103/physrevb.86.121203en
dc.identifier.doi10.1103/physrevb.86.121203
dc.identifier.issn1098-0121 (printed)
dc.identifier.urihttps://aaltodoc.aalto.fi/handle/123456789/17503
dc.identifier.urnURN:NBN:fi:aalto-201508264118
dc.language.isoenen
dc.publisherAmerican Physical Society (APS)en
dc.relation.ispartofseriesPhysical Review Ben
dc.relation.ispartofseriesVolume 86, Issue 12
dc.rights© 2012 American Physical Society (APS). This is the accepted version of the following article: Knutsen, K. E. & Galeckas, A. & Zubiaga, A. & Tuomisto, Filip & Farlow, G. C. & Svensson, B. G. & Kuznetsov, A. Yu. 2012. Zinc vacancy and oxygen interstitial in ZnO revealed by sequential annealing and electron irradiation. Physical Review B. Volume 86, Issue 12. 121203/1-5. ISSN 1098-0121 (printed). DOI: 10.1103/physrevb.86.121203, which has been published in final form at http://journals.aps.org/prb/abstract/10.1103/PhysRevB.86.121203.en
dc.rights.holderAmerican Physical Society (APS)
dc.subject.keywordZnOen
dc.subject.keywordphotoluminescenceen
dc.subject.keywordpositronsen
dc.subject.keywordvacanciesen
dc.subject.otherPhysicsen
dc.titleZinc vacancy and oxygen interstitial in ZnO revealed by sequential annealing and electron irradiationen
dc.typeA1 Alkuperäisartikkeli tieteellisessä aikakauslehdessäfi
dc.type.dcmitypetexten
dc.type.versionFinal published versionen

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