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Article: Abnormal reduction of Eu ions and luminescence in CaB2O4: Eu thin films

TitleAbnormal reduction of Eu ions and luminescence in CaB2O4: Eu thin films
Authors
KeywordsPhysics engineering
Issue Date2004
PublisherAmerican Institute of Physics. The Journal's web site is located at http://apl.aip.org/
Citation
Applied Physics Letters, 2004, v. 85 n. 17, p. 3720-3722 How to Cite?
AbstractThin films of CaB2O4: Eu were deposited on glass substrates by spray pyrolysis. The abnormal reduction of Eu3+ to Eu2+ in as-grown thin films was found at the growth temperatures from 300 to 500 °C. Blue cathodoluminescence was observed by annealing films in air, correlating with further abnormal reduction of Eu ions and crystallization of compounds. These phenomena were explained by an electron transfer mechanism. The chromaticity coordinates were x = 0.193 and y = 0.089 with a dominant wavelength of 455 nm. Our results indicate calcium borate doped with Eu is a blue phosphor at temperatures suitable for the use of glass substrates in flat panel applications. © 2004 American Institute of Physics.
Persistent Identifierhttp://hdl.handle.net/10722/42500
ISSN
2015 Impact Factor: 3.142
2015 SCImago Journal Rankings: 1.105
ISI Accession Number ID

 

DC FieldValueLanguage
dc.contributor.authorHao, JHen_HK
dc.contributor.authorGao, Jen_HK
dc.date.accessioned2007-01-29T08:51:13Z-
dc.date.available2007-01-29T08:51:13Z-
dc.date.issued2004en_HK
dc.identifier.citationApplied Physics Letters, 2004, v. 85 n. 17, p. 3720-3722en_HK
dc.identifier.issn0003-6951en_HK
dc.identifier.urihttp://hdl.handle.net/10722/42500-
dc.description.abstractThin films of CaB2O4: Eu were deposited on glass substrates by spray pyrolysis. The abnormal reduction of Eu3+ to Eu2+ in as-grown thin films was found at the growth temperatures from 300 to 500 °C. Blue cathodoluminescence was observed by annealing films in air, correlating with further abnormal reduction of Eu ions and crystallization of compounds. These phenomena were explained by an electron transfer mechanism. The chromaticity coordinates were x = 0.193 and y = 0.089 with a dominant wavelength of 455 nm. Our results indicate calcium borate doped with Eu is a blue phosphor at temperatures suitable for the use of glass substrates in flat panel applications. © 2004 American Institute of Physics.en_HK
dc.format.extent65802 bytes-
dc.format.extent28672 bytes-
dc.format.mimetypeapplication/pdf-
dc.format.mimetypeapplication/msword-
dc.languageengen_HK
dc.publisherAmerican Institute of Physics. The Journal's web site is located at http://apl.aip.org/en_HK
dc.rightsCreative Commons: Attribution 3.0 Hong Kong License-
dc.subjectPhysics engineeringen_HK
dc.titleAbnormal reduction of Eu ions and luminescence in CaB2O4: Eu thin filmsen_HK
dc.typeArticleen_HK
dc.identifier.openurlhttp://library.hku.hk:4550/resserv?sid=HKU:IR&issn=0003-6951&volume=85&issue=17&spage=3720&epage=3722&date=2004&atitle=Abnormal+reduction+of+Eu+ions+and+luminescence+in+CaB2O4:++Eu+thin+filmsen_HK
dc.description.naturepublished_or_final_versionen_HK
dc.identifier.doi10.1063/1.1808876en_HK
dc.identifier.scopuseid_2-s2.0-9744246806-
dc.identifier.hkuros96348-
dc.identifier.isiWOS:000224798700022-

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