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Article: High-efficiency green organic light-emitting devices utilizing phosphorescent bis-cyclometalated alkynylgold(III) complexes

TitleHigh-efficiency green organic light-emitting devices utilizing phosphorescent bis-cyclometalated alkynylgold(III) complexes
Authors
Issue Date2010
PublisherAmerican Chemical Society. The Journal's web site is located at http://pubs.acs.org/journals/jacsat/index.html
Citation
Journal Of The American Chemical Society, 2010, v. 132 n. 40, p. 14273-14278 How to Cite?
AbstractA new phosphorescent material of cyclometalated alkynylgold(III) complex, [Au(2,5-F 2C 6H 3-CNC)(C≡C-C 6H 4N(C 6H 5) 2-p)] (1) (2,5-F 2C 6H 3-HC N CH = 2,6-diphenyl-4-(2,5- difluorophenyl)pyridine), has been synthesized, characterized, and its device performance investigated. This luminescent gold(III) complex was found to exhibit rich PL and EL properties and has been utilized as phosphorescent dopants of OLEDs. At an optimized dopant concentration of 4%, a device with a maximum external quantum efficiency (EQE) of 11.5%, corresponding to a current efficiency of 37.4 cd/A and a power efficiency of 26.2 lm/W, has been obtained. Such a high EQE is comparable to that of Ir(ppy) 3-based devices. The present work suggests that the alkynylgold(III) complex is a promising phosphorescent material in terms of both efficiency and thermal stability, with the additional advantages of its relatively inexpensive cost and low toxicity. © 2010 American Chemical Society.
Persistent Identifierhttp://hdl.handle.net/10722/133599
ISSN
2015 Impact Factor: 13.038
2015 SCImago Journal Rankings: 7.123
ISI Accession Number ID
Funding AgencyGrant Number
University Grants Committee Areas of Excellence SchemeAoE/P-03/08
UGC Special Equipment GrantSEG_HKU07
University of Hong Kong
Funding Information:

V.W.-W.Y. acknowledges support from The University of Hong Kong under the Distinguished Research Achievement Award Scheme and the URC Strategic Research Theme on Molecular Materials. This work has been supported by the University Grants Committee Areas of Excellence Scheme (AoE/P-03/08) and the UGC Special Equipment Grant (SEG_HKU07). V.K.-M.A. and D.P.-K.T. acknowledge the receipt of postgraduate studentships from The University of Hong Kong.

References
Grants

 

DC FieldValueLanguage
dc.contributor.authorAu, VKMen_HK
dc.contributor.authorWong, KMCen_HK
dc.contributor.authorTsang, DPKen_HK
dc.contributor.authorChan, MYen_HK
dc.contributor.authorZhu, Nen_HK
dc.contributor.authorYam, VWWen_HK
dc.date.accessioned2011-05-24T02:11:35Z-
dc.date.available2011-05-24T02:11:35Z-
dc.date.issued2010en_HK
dc.identifier.citationJournal Of The American Chemical Society, 2010, v. 132 n. 40, p. 14273-14278en_HK
dc.identifier.issn0002-7863en_HK
dc.identifier.urihttp://hdl.handle.net/10722/133599-
dc.description.abstractA new phosphorescent material of cyclometalated alkynylgold(III) complex, [Au(2,5-F 2C 6H 3-CNC)(C≡C-C 6H 4N(C 6H 5) 2-p)] (1) (2,5-F 2C 6H 3-HC N CH = 2,6-diphenyl-4-(2,5- difluorophenyl)pyridine), has been synthesized, characterized, and its device performance investigated. This luminescent gold(III) complex was found to exhibit rich PL and EL properties and has been utilized as phosphorescent dopants of OLEDs. At an optimized dopant concentration of 4%, a device with a maximum external quantum efficiency (EQE) of 11.5%, corresponding to a current efficiency of 37.4 cd/A and a power efficiency of 26.2 lm/W, has been obtained. Such a high EQE is comparable to that of Ir(ppy) 3-based devices. The present work suggests that the alkynylgold(III) complex is a promising phosphorescent material in terms of both efficiency and thermal stability, with the additional advantages of its relatively inexpensive cost and low toxicity. © 2010 American Chemical Society.en_HK
dc.languageengen_US
dc.publisherAmerican Chemical Society. The Journal's web site is located at http://pubs.acs.org/journals/jacsat/index.htmlen_HK
dc.relation.ispartofJournal of the American Chemical Societyen_HK
dc.titleHigh-efficiency green organic light-emitting devices utilizing phosphorescent bis-cyclometalated alkynylgold(III) complexesen_HK
dc.typeArticleen_HK
dc.identifier.openurlhttp://library.hku.hk:4550/resserv?sid=HKU:IR&issn=0002-7863&volume=132&issue=40&spage=14273&epage=14278&date=2010&atitle=High-efficiency+green+organic+light-emitting+devices+utilizing+phosphorescent+bis-cyclometalated+alkynylgold(iii)+complexes-
dc.identifier.emailWong, KMC: wongmc@hku.hken_HK
dc.identifier.emailChan, MY: chanmym@hku.hken_HK
dc.identifier.emailZhu, N: nzhu@hkucc.hku.hken_HK
dc.identifier.emailYam, VWW: wwyam@hku.hken_HK
dc.identifier.authorityWong, KMC=rp00809en_HK
dc.identifier.authorityChan, MY=rp00666en_HK
dc.identifier.authorityZhu, N=rp00845en_HK
dc.identifier.authorityYam, VWW=rp00822en_HK
dc.description.naturelink_to_subscribed_fulltext-
dc.identifier.doi10.1021/ja106579den_HK
dc.identifier.pmid20849118-
dc.identifier.scopuseid_2-s2.0-77957717362en_HK
dc.identifier.hkuros185276en_US
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-77957717362&selection=ref&src=s&origin=recordpageen_HK
dc.identifier.volume132en_HK
dc.identifier.issue40en_HK
dc.identifier.spage14273en_HK
dc.identifier.epage14278en_HK
dc.identifier.eissn1520-5126-
dc.identifier.isiWOS:000282660100066-
dc.publisher.placeUnited Statesen_HK
dc.relation.projectInstitute of Molecular Functional Materials-
dc.relation.projectIntegrated Time-Resolved Spectroscopy Facility-
dc.identifier.scopusauthoridAu, VKM=26421974800en_HK
dc.identifier.scopusauthoridWong, KMC=8061067200en_HK
dc.identifier.scopusauthoridTsang, DPK=36605252900en_HK
dc.identifier.scopusauthoridChan, MY=7402597725en_HK
dc.identifier.scopusauthoridZhu, N=7201449530en_HK
dc.identifier.scopusauthoridYam, VWW=18539304700en_HK

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