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Article: A novel hydrate-based thin-film phosphor: low-temperature growth process and properties

TitleA novel hydrate-based thin-film phosphor: low-temperature growth process and properties
Authors
Issue Date2005
PublisherSpringer Verlag. The Journal's web site is located at http://link.springer.de/link/service/journals/00339/index.htm
Citation
Applied Physics A: materials science & processing, 2005, v. 81 n. 6, p. 1277-1280 How to Cite?
AbstractThin films of barium chloride hydrate doped with cerium were deposited by spray pyrolysis of aqueous solutions. The cathodoluminescence (CL) spectrum consists of two peaks at 443 and 485 nm due to 4f–5d transitions of the cerium ion in thin films without post-heat treatment. The CL depended dramatically on deposition temperature between 250 °C and 500 °C. The phenomenon is directly related to the change of crystallinity and Cl concentration of the thin films. The CL spectra of thin films of BaCl2·2H2O:Ce were compared on various substrates. The relaxation behavior of CL was also observed in thin-film phosphor. Our results indicate that the material studied as thin-film phosphor is unique since it contains water. It seems that the 4f–5d transition in Ce is so energetic that the O–H phonons cannot disturb it, indicating that barium chloride hydrate is a novel host in which Ce has a higher efficiency.
Persistent Identifierhttp://hdl.handle.net/10722/80604
ISSN
2015 Impact Factor: 1.444
2015 SCImago Journal Rankings: 0.535
ISI Accession Number ID

 

DC FieldValueLanguage
dc.contributor.authorHao, JHen_HK
dc.contributor.authorGao, Jen_HK
dc.date.accessioned2010-09-06T08:08:17Z-
dc.date.available2010-09-06T08:08:17Z-
dc.date.issued2005en_HK
dc.identifier.citationApplied Physics A: materials science & processing, 2005, v. 81 n. 6, p. 1277-1280en_HK
dc.identifier.issn0947-8396en_HK
dc.identifier.urihttp://hdl.handle.net/10722/80604-
dc.description.abstractThin films of barium chloride hydrate doped with cerium were deposited by spray pyrolysis of aqueous solutions. The cathodoluminescence (CL) spectrum consists of two peaks at 443 and 485 nm due to 4f–5d transitions of the cerium ion in thin films without post-heat treatment. The CL depended dramatically on deposition temperature between 250 °C and 500 °C. The phenomenon is directly related to the change of crystallinity and Cl concentration of the thin films. The CL spectra of thin films of BaCl2·2H2O:Ce were compared on various substrates. The relaxation behavior of CL was also observed in thin-film phosphor. Our results indicate that the material studied as thin-film phosphor is unique since it contains water. It seems that the 4f–5d transition in Ce is so energetic that the O–H phonons cannot disturb it, indicating that barium chloride hydrate is a novel host in which Ce has a higher efficiency.-
dc.languageengen_HK
dc.publisherSpringer Verlag. The Journal's web site is located at http://link.springer.de/link/service/journals/00339/index.htmen_HK
dc.relation.ispartofApplied Physics A: materials science & processingen_HK
dc.titleA novel hydrate-based thin-film phosphor: low-temperature growth process and propertiesen_HK
dc.typeArticleen_HK
dc.identifier.openurlhttp://library.hku.hk:4550/resserv?sid=HKU:IR&issn=0947-8396&volume=81&spage=1277&epage=1280&date=2005&atitle=A+novel+hydrate-based+thin-film+phosphor:+low-temperature+growth+process+and+propertiesen_HK
dc.identifier.emailHao, JH: jhhao@hku.hken_HK
dc.identifier.emailGao, J: jugao@hku.hken_HK
dc.identifier.authorityGao, J=rp00699en_HK
dc.description.naturelink_to_subscribed_fulltext-
dc.identifier.doi10.1007/s00339-004-3023-1-
dc.identifier.scopuseid_2-s2.0-24344445572-
dc.identifier.hkuros112171en_HK
dc.identifier.issue6-
dc.identifier.isiWOS:000231599900034-

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