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Article: Defect photoluminescence of ZnO nanorods synthesized by chemical methods

TitleDefect photoluminescence of ZnO nanorods synthesized by chemical methods
Authors
KeywordsA. Nanostructures
A. Oxides
Issue Date2008
PublisherPergamon. The Journal's web site is located at http://www.elsevier.com/locate/jpcs
Citation
Journal Of Physics And Chemistry Of Solids, 2008, v. 69 n. 2-3, p. 353-357 How to Cite?
AbstractWe investigated the morphology and properties of ZnO nanorods synthesized at 90 °C from the solutions of zinc nitrate hydrate and hexamethylenetetramine. Three different substrates were used: Si and Zn foil treated with ZnO nanoparticle seeds, and Si/polycrystalline ZnO film. The morphology of the samples was investigated by scanning electron microscopy, while their optical properties were characterized by photoluminescence spectroscopy. The substrate was found to affect the size uniformity and alignment of ZnO nanorods. The nanorods exhibited strong yellow defect emission. In order to investigate the possibility of improving the optical properties, the influence of annealing at different temperatures (200-600 °C) and in different atmospheres (Ar, air, N 2, forming gas) was investigated. While annealing in air improved UV-to-visible emission ratio, defect emission remained prominent. However, annealing in forming gas enhanced UV emission and suppressed defect emission. © 2007 Elsevier Ltd. All rights reserved.
Persistent Identifierhttp://hdl.handle.net/10722/70014
ISSN
2015 Impact Factor: 2.048
2015 SCImago Journal Rankings: 0.639
ISI Accession Number ID
References

 

DC FieldValueLanguage
dc.contributor.authorLeung, YHen_HK
dc.contributor.authorDjurišić, ABen_HK
dc.contributor.authorLiu, ZTen_HK
dc.contributor.authorLi, Den_HK
dc.contributor.authorXie, MHen_HK
dc.contributor.authorChan, WKen_HK
dc.date.accessioned2010-09-06T06:18:54Z-
dc.date.available2010-09-06T06:18:54Z-
dc.date.issued2008en_HK
dc.identifier.citationJournal Of Physics And Chemistry Of Solids, 2008, v. 69 n. 2-3, p. 353-357en_HK
dc.identifier.issn0022-3697en_HK
dc.identifier.urihttp://hdl.handle.net/10722/70014-
dc.description.abstractWe investigated the morphology and properties of ZnO nanorods synthesized at 90 °C from the solutions of zinc nitrate hydrate and hexamethylenetetramine. Three different substrates were used: Si and Zn foil treated with ZnO nanoparticle seeds, and Si/polycrystalline ZnO film. The morphology of the samples was investigated by scanning electron microscopy, while their optical properties were characterized by photoluminescence spectroscopy. The substrate was found to affect the size uniformity and alignment of ZnO nanorods. The nanorods exhibited strong yellow defect emission. In order to investigate the possibility of improving the optical properties, the influence of annealing at different temperatures (200-600 °C) and in different atmospheres (Ar, air, N 2, forming gas) was investigated. While annealing in air improved UV-to-visible emission ratio, defect emission remained prominent. However, annealing in forming gas enhanced UV emission and suppressed defect emission. © 2007 Elsevier Ltd. All rights reserved.en_HK
dc.languageengen_HK
dc.publisherPergamon. The Journal's web site is located at http://www.elsevier.com/locate/jpcsen_HK
dc.relation.ispartofJournal of Physics and Chemistry of Solidsen_HK
dc.subjectA. Nanostructuresen_HK
dc.subjectA. Oxidesen_HK
dc.titleDefect photoluminescence of ZnO nanorods synthesized by chemical methodsen_HK
dc.typeArticleen_HK
dc.identifier.openurlhttp://library.hku.hk:4550/resserv?sid=HKU:IR&issn=0022-3697&volume=69&spage=353&epage=357&date=2008&atitle=Defect+photoluminescence+of+ZnO+nanorods+synthesized+by+chemical+methodsen_HK
dc.identifier.emailDjurišić, AB: dalek@hku.hken_HK
dc.identifier.emailXie, MH: mhxie@hku.hken_HK
dc.identifier.emailChan, WK: waichan@hku.hken_HK
dc.identifier.authorityDjurišić, AB=rp00690en_HK
dc.identifier.authorityXie, MH=rp00818en_HK
dc.identifier.authorityChan, WK=rp00667en_HK
dc.description.naturelink_to_subscribed_fulltext-
dc.identifier.doi10.1016/j.jpcs.2007.07.029en_HK
dc.identifier.scopuseid_2-s2.0-38749097380en_HK
dc.identifier.hkuros140742en_HK
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-38749097380&selection=ref&src=s&origin=recordpageen_HK
dc.identifier.volume69en_HK
dc.identifier.issue2-3en_HK
dc.identifier.spage353en_HK
dc.identifier.epage357en_HK
dc.identifier.isiWOS:000253874700021-
dc.publisher.placeUnited Kingdomen_HK
dc.identifier.scopusauthoridLeung, YH=16042693500en_HK
dc.identifier.scopusauthoridDjurišić, AB=7004904830en_HK
dc.identifier.scopusauthoridLiu, ZT=22934686400en_HK
dc.identifier.scopusauthoridLi, D=26324923700en_HK
dc.identifier.scopusauthoridXie, MH=7202255416en_HK
dc.identifier.scopusauthoridChan, WK=13310083000en_HK

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