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Optical characterization studies of grown-in defects in ZnO epilayers grown by molecular beam epitaxy
Linköping University, The Institute of Technology. Linköping University, Department of Physics, Chemistry and Biology, Biomolecular and Organic Electronics .
Linköping University, Department of Physics, Chemistry and Biology, Functional Electronic Materials. Linköping University, The Institute of Technology.ORCID iD: 0000-0001-7155-7103
Linköping University, The Institute of Technology. Linköping University, Department of Physics, Chemistry and Biology, Functional Electronic Materials.ORCID iD: 0000-0002-6405-9509
Department of Electrical and Computer Engineering, University of California, La Jolla, United States, Optical Sciences Center, National Central University, Jhongli, Taoyuan 32001, Taiwan.
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2007 (English)In: Physica. B, Condensed matter, ISSN 0921-4526, Vol. 401-402, 413-416 p.Article in journal (Refereed) Published
Abstract [en]

Defect formation in ZnO epilayers grown by molecular beam epitaxy (MBE) is studied by employing optical characterization techniques such as photoluminescence (PL) and optically detected magnetic resonance (ODMR). Excess of oxygen during the growth was found to cause an appearance of the PL peak at around 3.338 eV, which indicates that the corresponding defects are predominantly formed in O-rich ZnO. On the other hand, non-stoichiometry during the growth was singled out as the main factor facilitating formation of defects involved in the yellow PL emission band peaking at around 2.17 eV. Several magnetic-resonance active defects are revealed via monitoring this emission and their magnetic-resonance signatures are obtained. © 2007 Elsevier B.V. All rights reserved.

Place, publisher, year, edition, pages
2007. Vol. 401-402, 413-416 p.
Keyword [en]
Defects, Photoluminescence, ZnO
National Category
Engineering and Technology
Identifiers
URN: urn:nbn:se:liu:diva-47355DOI: 10.1016/j.physb.2007.08.200OAI: oai:DiVA.org:liu-47355DiVA: diva2:268251
Available from: 2009-10-11 Created: 2009-10-11 Last updated: 2017-03-27

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Wang, XiangjunBuyanova, Irina A.Chen, Weimin

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Wang, XiangjunBuyanova, Irina A.Chen, Weimin
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