Annealing and surface conduction on hydrogen peroxide treated bulk melt grown, single crystal ZnO

dc.contributor.authorMtangi, Wilbert
dc.contributor.authorNel, Jacqueline Margot
dc.contributor.authorAuret, Francois Danie
dc.contributor.authorChawanda, Albert
dc.contributor.authorNyamhere, Cloud
dc.contributor.authorDiale, M. (Mmantsae Moche)
dc.contributor.emailwilbert.mtangi@up.ac.zaen
dc.date.accessioned2013-07-15T12:06:44Z
dc.date.available2013-07-15T12:06:44Z
dc.date.issued2012-10
dc.description.abstractWe report on the studies carried out on hydrogen peroxide treated melt grown, bulk single crystal ZnO samples. Results show the existence of two shallow donors in the as-received ZnO samples with energy levels (37.8 ± 0.3) meV that has been suggested as Zni related and possibly H-complex related and (54.5 ± 0.9) meV which has been assigned to an Al-related donor. Annealing studies performed on the hydrogen peroxide treated samples reveal the existence of a conductive channel in the samples in which new energy levels have been observed, Zn vacancies, related to the Group I elements, XZn. The surface donor volume concentration of the conductive channel was calculated from theory developed by D. C. Look [1]. Results indicate an increase in surface volume concentration with increasing annealing temperature from 6.0´1017 cm-3 at 200°C to 4.37´1018 cm-3 at 800°C.en
dc.description.librarianhb2013en
dc.description.librarianai2013en
dc.description.sponsorshipSouth African National Research Foundationen
dc.description.urihttp://www.elsevier.com/locate/physben
dc.identifier.citationMtangi, W, Nel, JM, Auret, FD, Chawanda, A, Nyamhere, C & Diale, M 2012, 'Annealing and surface conduction on hydrogen peroxide treated bulk melt grown, single crystal ZnO', Physica B : Condensed Matter, vol. 407, no. 10, pp. 1624-1627.en
dc.identifier.issn0921-4526 (print)
dc.identifier.issn1873-2135 (online)
dc.identifier.other10.1016/j.physb.2011.09.101
dc.identifier.urihttp://hdl.handle.net/2263/21957
dc.language.isoenen
dc.publisherElsevieren
dc.rights© 2013 Elsevier. All rights reserved. Notice : this is the author’s version of a work that was accepted for publication in Physica B : Condensed Matter.Changes resulting from the publishing process, such as peer review, editing, corrections, structural formatting, and other quality control mechanisms may not be reflected in this document. Changes may have been made to this work since it was submitted for publication. A definitive version was subsequently published in Physica B : Condensed Matter, vol. 407, no. 10, 2012, doi. 10.1016/j.physb.2011.09.101en
dc.subjectSurface conductionen
dc.subjectZinc interstitialsen
dc.subjectAnnealingen
dc.subject.lcshZinc oxideen
dc.subject.lcshZinc oxide -- Heat treatmenten
dc.subject.lcshHydrogen peroxideen
dc.subject.lcshElectric conductivityen
dc.subject.lcshHall effecten
dc.titleAnnealing and surface conduction on hydrogen peroxide treated bulk melt grown, single crystal ZnOen
dc.typePostprint Articleen

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