Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/26268
PIRA download icon_1.1View/Download Full Text
DC FieldValueLanguage
dc.contributorDepartment of Applied Physics-
dc.creatorLau, CM-
dc.creatorWu, X-
dc.creatorKwok, KW-
dc.date.accessioned2015-10-13T08:27:28Z-
dc.date.available2015-10-13T08:27:28Z-
dc.identifier.issn0021-8979-
dc.identifier.urihttp://hdl.handle.net/10397/26268-
dc.language.isoenen_US
dc.publisherAmerican Institute of Physicsen_US
dc.rights© 2015 AIP Publishing LLC.en_US
dc.rightsThis article may be downloaded for personal use only. Any other use requires prior permission of the author and AIP Publishing. This article appeared in C. M. Lau, X. Wu and K. W. Kwok, J. Appl. Phys. 118, 034107 (2015) and may be found at https://dx.doi.org/10.1063/1.4927297en_US
dc.titleEffects of vacancies on luminescence of Er-doped 0.93Bi0.5Na0.5TiO3-0.07BaTiO3 ceramicsen_US
dc.typeJournal/Magazine Articleen_US
dc.identifier.volume118-
dc.identifier.issue3-
dc.identifier.doi10.1063/1.4927297-
dcterms.abstract0.93Bi0.5Na0.5TiO3-0.07BaTiO3 ceramics doped with 0.01 mol Er3+ have been prepared and their photoluminescence (PL), ferroelectric, dielectric, and piezoelectric properties have been studied. By doping Er3+ at various sites, ceramics containing oxygen or cation vacancies have been prepared and their effects have been investigated. Ceramic containing no vacancy (i.e., doping Er3+ at the Bi3+ site) has also been prepared as a reference for the study. In addition to the reduction of the up-conversion PL emissions at 532, 547, and 660 nm, our results also reveal that oxygen vacancies can enhance, at the expense of the visible emissions, the near-infrared (1.44-1.66 μm) and mid-infrared (2.62-2.84 μm) down-conversion emissions. Similar results have also been observed for the ceramics containing cation vacancies, and the enhancement in the near-infrared emission becomes much more significant, reaching about 70% for the ceramic doped with Er3+ at the Na+ site. These should be attributed to the looping mechanism between the 4F7/2, 2H11/2, 4I9/2, and 4I11/2 levels facilitated by the cation vacancies and the efficient cross relaxations. The ceramics also exhibit reasonably good ferroelectric, dielectric, and piezoelectric properties, suggesting that they have great potential for multifunctional applications.-
dcterms.accessRightsopen accessen_US
dcterms.bibliographicCitationJournal of applied physics, 2015, v. 118, no. 3, 34107, p. 034107-1-034107-8-
dcterms.isPartOfJournal of applied physics-
dcterms.issued2015-
dc.identifier.scopus2-s2.0-84937469267-
dc.identifier.eissn1089-7550-
dc.identifier.rosgroupid2015002408-
dc.description.ros2015-2016 > Academic research: refereed > Publication in refereed journal-
dc.description.oaVersion of Recorden_US
dc.identifier.FolderNumberOA_IR/PIRAen_US
dc.description.pubStatusPublisheden_US
Appears in Collections:Journal/Magazine Article
Files in This Item:
File Description SizeFormat 
Lau_Vacancies_Luminescence_Er-doped.pdf1.94 MBAdobe PDFView/Open
Open Access Information
Status open access
File Version Version of Record
Access
View full-text via PolyU eLinks SFX Query
Show simple item record

Page views

181
Last Week
1
Last month
Citations as of Mar 24, 2024

Downloads

106
Citations as of Mar 24, 2024

SCOPUSTM   
Citations

18
Last Week
0
Last month
0
Citations as of Mar 28, 2024

WEB OF SCIENCETM
Citations

19
Last Week
0
Last month
0
Citations as of Mar 28, 2024

Google ScholarTM

Check

Altmetric


Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.