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Article: Efficiency and stability enhancement in organic light-emitting devices with CsF/Mg:Ag cathode

TitleEfficiency and stability enhancement in organic light-emitting devices with CsF/Mg:Ag cathode
Authors
Issue Date2003
PublisherElsevier BV. The Journal's web site is located at http://www.elsevier.com/locate/cplett
Citation
Chemical Physics Letters, 2003, v. 380 n. 3-4, p. 298-303 How to Cite?
AbstractWe report low operating voltage and high efficiency organic electroluminescence devices by using an ultrathin CsF layer with the conventional Mg:Ag cathode. At 5 V, devices with CsF/Mg:Ag cathode show a luminance of 800 cd/m 2 and a current efficiency of 4 cd/A compared to those (130 cd/m 2 and 2.6 cd/A) in standard Mg:Ag devices. In addition, the insertion of the CsF layer increases the maximum power efficiency from 1.6 to 3.3 lm/W. Mechanism responsible for this performance improvement is attributed to the substantial reduction of electron injection barrier by the free Cs metal atoms released at the organic/metal interface. This shallow contact also acts as a diffusion barrier for Mg, suppressing the formation of MgO and the degradation of Alq 3 molecules, and thus improves the long-term operational stability. © 2003 Elsevier B.V. All rights reserved.
Persistent Identifierhttp://hdl.handle.net/10722/167840
ISSN
2015 Impact Factor: 1.86
2015 SCImago Journal Rankings: 0.757
ISI Accession Number ID
References

 

DC FieldValueLanguage
dc.contributor.authorChan, MYen_US
dc.contributor.authorLai, SLen_US
dc.contributor.authorLee, CSen_US
dc.contributor.authorLee, STen_US
dc.date.accessioned2012-10-08T03:12:07Z-
dc.date.available2012-10-08T03:12:07Z-
dc.date.issued2003en_US
dc.identifier.citationChemical Physics Letters, 2003, v. 380 n. 3-4, p. 298-303en_US
dc.identifier.issn0009-2614en_US
dc.identifier.urihttp://hdl.handle.net/10722/167840-
dc.description.abstractWe report low operating voltage and high efficiency organic electroluminescence devices by using an ultrathin CsF layer with the conventional Mg:Ag cathode. At 5 V, devices with CsF/Mg:Ag cathode show a luminance of 800 cd/m 2 and a current efficiency of 4 cd/A compared to those (130 cd/m 2 and 2.6 cd/A) in standard Mg:Ag devices. In addition, the insertion of the CsF layer increases the maximum power efficiency from 1.6 to 3.3 lm/W. Mechanism responsible for this performance improvement is attributed to the substantial reduction of electron injection barrier by the free Cs metal atoms released at the organic/metal interface. This shallow contact also acts as a diffusion barrier for Mg, suppressing the formation of MgO and the degradation of Alq 3 molecules, and thus improves the long-term operational stability. © 2003 Elsevier B.V. All rights reserved.en_US
dc.languageengen_US
dc.publisherElsevier BV. The Journal's web site is located at http://www.elsevier.com/locate/cpletten_US
dc.relation.ispartofChemical Physics Lettersen_US
dc.titleEfficiency and stability enhancement in organic light-emitting devices with CsF/Mg:Ag cathodeen_US
dc.typeArticleen_US
dc.identifier.emailChan, MY:chanmym@hku.hken_US
dc.identifier.authorityChan, MY=rp00666en_US
dc.description.naturelink_to_subscribed_fulltexten_US
dc.identifier.doi10.1016/j.cplett.2003.09.015en_US
dc.identifier.scopuseid_2-s2.0-0142106456en_US
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-0142106456&selection=ref&src=s&origin=recordpageen_US
dc.identifier.volume380en_US
dc.identifier.issue3-4en_US
dc.identifier.spage298en_US
dc.identifier.epage303en_US
dc.identifier.isiWOS:000186154000011-
dc.publisher.placeNetherlandsen_US
dc.identifier.scopusauthoridChan, MY=7402597725en_US
dc.identifier.scopusauthoridLai, SL=7402937153en_US
dc.identifier.scopusauthoridLee, CS=35364273600en_US
dc.identifier.scopusauthoridLee, ST=7601407495en_US

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