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DC Field | Value | Language |
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dc.contributor.author | Mtangi, W. | - |
dc.contributor.author | Nel, J.M. | - |
dc.contributor.author | Auret, F.D. | - |
dc.contributor.author | Chawanda, Albert | - |
dc.contributor.author | Diale, M. | - |
dc.contributor.author | Nyamhere, C. | - |
dc.date.accessioned | 2016-06-22T14:18:03Z | - |
dc.date.available | 2016-06-22T14:18:03Z | - |
dc.date.issued | 2012 | - |
dc.identifier.issn | 0921-4526 | - |
dc.identifier.uri | hhttp://www.sciencedirect.com/science/article/pii/S0921452611009926 | - |
dc.identifier.uri | http://hdl.handle.net/11408/1617 | - |
dc.description.abstract | We 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 a theory developed by Look (2007) [1]. Results indicate an increase in the surface volume concentration with increasing annealing temperature from 60×1017 cm−3 at 200 °C to 4.37×1018 cm-3 at 800 °C. | en_US |
dc.language.iso | en | en_US |
dc.publisher | Elsevier | en_US |
dc.relation.ispartofseries | Physica B: Condensed Matter;Vol. 407, No. 10; p. 1624–1627 | - |
dc.subject | Hall effect; Surface conduction; Zinc interstitials; Annealing; Shallow donors | en_US |
dc.title | Annealing and surface conduction on Hydrogen peroxide treated bulk melt-grown, single crystal ZnO | en_US |
dc.type | Article | en_US |
item.openairetype | Article | - |
item.fulltext | With Fulltext | - |
item.languageiso639-1 | en | - |
item.openairecristype | http://purl.org/coar/resource_type/c_18cf | - |
item.grantfulltext | open | - |
item.cerifentitytype | Publications | - |
Appears in Collections: | Research Papers |
Files in This Item:
File | Description | Size | Format | |
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Annealing and surface conduction on Hydrogen peroxide treated bulk melt.pdf | Abstract | 108.56 kB | Adobe PDF | View/Open |
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