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Article: Optical properties of a novel yellow fluorescent dopant for use in organic LEDs

TitleOptical properties of a novel yellow fluorescent dopant for use in organic LEDs
Authors
KeywordsPhysics engineering
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 And Processing, 2005, v. 81 n. 3, p. 517-521 How to Cite?
AbstractIn this paper, the optical properties of a novel organic, 2,8-di(t-butyl)-5,11-di[4(t-butyl) phenyl]-6,12-diphenylnaphthacene (tetra(t-butyl)rubrene) have been investigated. Our results show that there are two peaks in the photoluminescence (PL) spectra of tetra(t-butyl)rubrene (TBRb) which are also confirmed in the electroluminescence (EL) spectra. Photo-quenching of the PL intensity is observed when the irradiation time increases. It is shown that oxidation is the dominant reason for photo-quenching. The absolute refractive index and absorption coefficient have also been determined and the results correlate well with the PL results. The results show that TBRb can be a good dopant to achieve the Förster energy transfer and to assist light emission. The optical properties of TBRb are similar to those of rubrene; however, the PL of TBRb is much stronger than that of rubrene. Finally, although crystalline organics have been commonly reported by heating the sample, we report crystallization of TBRb at low temperature <230 K when the TBRb film is in an amorphous form before cooling. © Springer-Verlag 2004.
Persistent Identifierhttp://hdl.handle.net/10722/48586
ISSN
2015 Impact Factor: 1.444
2015 SCImago Journal Rankings: 0.535
ISI Accession Number ID
References

 

DC FieldValueLanguage
dc.contributor.authorChoy, WCHen_HK
dc.contributor.authorWu, YSen_HK
dc.contributor.authorChen, CHen_HK
dc.contributor.authorCheah, KWen_HK
dc.date.accessioned2008-05-22T04:18:04Z-
dc.date.available2008-05-22T04:18:04Z-
dc.date.issued2005en_HK
dc.identifier.citationApplied Physics A: Materials Science And Processing, 2005, v. 81 n. 3, p. 517-521en_HK
dc.identifier.issn0947-8396en_HK
dc.identifier.urihttp://hdl.handle.net/10722/48586-
dc.description.abstractIn this paper, the optical properties of a novel organic, 2,8-di(t-butyl)-5,11-di[4(t-butyl) phenyl]-6,12-diphenylnaphthacene (tetra(t-butyl)rubrene) have been investigated. Our results show that there are two peaks in the photoluminescence (PL) spectra of tetra(t-butyl)rubrene (TBRb) which are also confirmed in the electroluminescence (EL) spectra. Photo-quenching of the PL intensity is observed when the irradiation time increases. It is shown that oxidation is the dominant reason for photo-quenching. The absolute refractive index and absorption coefficient have also been determined and the results correlate well with the PL results. The results show that TBRb can be a good dopant to achieve the Förster energy transfer and to assist light emission. The optical properties of TBRb are similar to those of rubrene; however, the PL of TBRb is much stronger than that of rubrene. Finally, although crystalline organics have been commonly reported by heating the sample, we report crystallization of TBRb at low temperature <230 K when the TBRb film is in an amorphous form before cooling. © Springer-Verlag 2004.en_HK
dc.format.extent504673 bytes-
dc.format.extent24480 bytes-
dc.format.mimetypeapplication/pdf-
dc.format.mimetypeapplication/pdf-
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 and Processingen_HK
dc.rightsCreative Commons: Attribution 3.0 Hong Kong License-
dc.rightsThe original publication is available at www.springerlink.comen_HK
dc.subjectPhysics engineeringen_HK
dc.titleOptical properties of a novel yellow fluorescent dopant for use in organic LEDsen_HK
dc.typeArticleen_HK
dc.identifier.openurlhttp://library.hku.hk:4550/resserv?sid=HKU:IR&issn=0947-8396&volume=81&issue=3&spage=517&epage=521&date=2005&atitle=Optical+properties+of+a+novel+yellow+fluorescent+dopant+for+use+in+organic+LEDs+en_HK
dc.identifier.emailChoy, WCH:chchoy@eee.hku.hken_HK
dc.identifier.authorityChoy, WCH=rp00218en_HK
dc.description.naturepostprinten_HK
dc.identifier.doi10.1007/s00339-004-2950-1en_HK
dc.identifier.scopuseid_2-s2.0-21644451871en_HK
dc.identifier.hkuros106353-
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-21644451871&selection=ref&src=s&origin=recordpageen_HK
dc.identifier.volume81en_HK
dc.identifier.issue3en_HK
dc.identifier.spage517en_HK
dc.identifier.epage521en_HK
dc.identifier.isiWOS:000232116100014-
dc.publisher.placeGermanyen_HK
dc.identifier.scopusauthoridChoy, WCH=7006202371en_HK
dc.identifier.scopusauthoridWu, YS=8534035900en_HK
dc.identifier.scopusauthoridChen, CH=7501946983en_HK
dc.identifier.scopusauthoridCheah, KW=7102792922en_HK

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