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Effect of Ag doping on the microstructure and photoluminescence of ZnO nanostructures
Linköping University, Department of Physics, Chemistry and Biology, Semiconductor Materials. Linköping University, The Institute of Technology.
Aristotle University of Thessaloniki, Greece.
Linköping University, Department of Physics, Chemistry and Biology, Semiconductor Materials. Linköping University, The Institute of Technology.
Linköping University, Department of Physics, Chemistry and Biology, Semiconductor Materials. Linköping University, The Institute of Technology.
2014 (English)In: Physica Status Solidi (a) applications and materials science, ISSN 1862-6300, E-ISSN 1862-6319, Vol. 211, no 9, 2109-2114 p.Article in journal (Refereed) Published
Abstract [en]

ZnO nanostructures were obtained by metal-organic chemical vapor deposition via Ag catalyst-assisted growth in a temperature range of 200-500 degrees C. Growth at temperatures above 500 degrees C resulted in vertically aligned ZnO nanorods (NLs). Ag incorporation into ZnO up to 0.4 at.% promoted creation of basal plane stacking fault (BSF) defects and corrugation of the side facets of the NLs. The presence of BSFs give rise to an additional photoluminescence peak with a wavelength of similar to 386 nm, which is slightly red-shifted compared to the commonly observed NBE emission at similar to 375 nm. The observed emission was found to be specifically observed from the side facets of the NLs. It is suggested that this emission is due to a high concentration of BSFs in the ZnO as a result of an incorporation of Ag as acceptor dopant. [GRAPHICS] SEM image of an Ag-doped ZnO nanorod with corrugated side facets. The observed corrugation is accompanied by a high concentration of basal plane stacking faults.

Place, publisher, year, edition, pages
Wiley-VCH Verlag , 2014. Vol. 211, no 9, 2109-2114 p.
Keyword [en]
Ag doping; corrugated surface; p-type ZnO; stacking faults
National Category
Chemical Sciences
Identifiers
URN: urn:nbn:se:liu:diva-111464DOI: 10.1002/pssa.201400008ISI: 000341988400026OAI: oai:DiVA.org:liu-111464DiVA: diva2:757128
Note

Funding Agencies|Linkoping Linnaeus Initiative for Novel Functional Materials (LiLi-NFM)

Available from: 2014-10-21 Created: 2014-10-17 Last updated: 2017-12-05

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Khranovskyy, VolodymyrEriksson, MartinYakimova, Rositsa

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