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Article: Magnetic field effects on the electroluminescence of organic light emitting devices: A tool to indicate the carrier mobility

TitleMagnetic field effects on the electroluminescence of organic light emitting devices: A tool to indicate the carrier mobility
Authors
KeywordsEmission layers
Magnetic field strengths
Mixing ratios
Organic light-emitting devices
Theoretical result
Issue Date2010
PublisherAmerican Institute of Physics. The Journal's web site is located at http://apl.aip.org/
Citation
Applied Physics Letters, 2010, v. 97 n. 16 How to Cite?
AbstractThe magnetoelectroluminescence (MEL) of organic light emitting devices with a N, N′ -bis(l-naphthyl)- N, N′ -diphenyl- 1, l′ -biphentl- 4, 4′ -diamine:tris-(8-hydroxyquinoline) aluminum (NPB: Alq 3) mixed emission layer (EML) has been investigated. We find that MEL is maximized when the volume ratio of NPB of the mixed EML reaches 30% and the EML thickness is 40 nm. The features of MEL under various magnetic field strengths are insensitive to the change in EML thickness and mixing ratio. Meanwhile, MEL has a close relationship with the carrier mobility. We have conducted a theoretical study to further verify the relationship. Our experimental and theoretical results confirm that MEL can function as a tool to indicate the mobility. © 2010 American Institute of Physics.
Persistent Identifierhttp://hdl.handle.net/10722/135129
ISSN
2015 Impact Factor: 3.142
2015 SCImago Journal Rankings: 1.105
ISI Accession Number ID
Funding AgencyGrant Number
University of Hong Kong400327
Research Grant Council of the HK Special Administrative Region, ChinaHKU712108
HKU712010
National Natural Science Foundation of China
Shanghai Science and Technology Commission08JC1402300
MST of China2009CB929200
HKU
Funding Information:

This work is supported by the UGC Grant (Grant No. 400327) of the University of Hong Kong, the grants (Grant Nos. HKU712108 and HKU712010) from the Research Grant Council of the HK Special Administrative Region, China, the National Natural Science Foundation of China and Shanghai Science and Technology Commission (Grant No 08JC1402300), and the MST of China (Grant No. 2009CB929200). B. F. Ding acknowledges the support of Engineering Postdoctoral Fellowship, HKU.

References

 

DC FieldValueLanguage
dc.contributor.authorDing, BFen_HK
dc.contributor.authorYao, Yen_HK
dc.contributor.authorSun, ZYen_HK
dc.contributor.authorWu, CQen_HK
dc.contributor.authorGao, XDen_HK
dc.contributor.authorWang, ZJen_HK
dc.contributor.authorDing, XMen_HK
dc.contributor.authorChoy, WCHen_HK
dc.contributor.authorHou, XYen_HK
dc.date.accessioned2011-07-27T01:28:36Z-
dc.date.available2011-07-27T01:28:36Z-
dc.date.issued2010en_HK
dc.identifier.citationApplied Physics Letters, 2010, v. 97 n. 16en_HK
dc.identifier.issn0003-6951en_HK
dc.identifier.urihttp://hdl.handle.net/10722/135129-
dc.description.abstractThe magnetoelectroluminescence (MEL) of organic light emitting devices with a N, N′ -bis(l-naphthyl)- N, N′ -diphenyl- 1, l′ -biphentl- 4, 4′ -diamine:tris-(8-hydroxyquinoline) aluminum (NPB: Alq 3) mixed emission layer (EML) has been investigated. We find that MEL is maximized when the volume ratio of NPB of the mixed EML reaches 30% and the EML thickness is 40 nm. The features of MEL under various magnetic field strengths are insensitive to the change in EML thickness and mixing ratio. Meanwhile, MEL has a close relationship with the carrier mobility. We have conducted a theoretical study to further verify the relationship. Our experimental and theoretical results confirm that MEL can function as a tool to indicate the mobility. © 2010 American Institute of Physics.en_HK
dc.languageengen_US
dc.publisherAmerican Institute of Physics. The Journal's web site is located at http://apl.aip.org/en_HK
dc.relation.ispartofApplied Physics Lettersen_HK
dc.rightsApplied Physics Letters. Copyright © American Institute of Physics.-
dc.rightsCopyright (2010) American Institute of Physics. This article may be downloaded for personal use only. Any other use requires prior permission of the author and the American Institute of Physics. The following article appeared in Applied Physics Letters, 2010, v. 97 n. 16, article no. 163302 and may be found at http://apl.aip.org/resource/1/applab/v97/i16/p163302_s1-
dc.rightsCreative Commons: Attribution 3.0 Hong Kong License-
dc.subjectEmission layers-
dc.subjectMagnetic field strengths-
dc.subjectMixing ratios-
dc.subjectOrganic light-emitting devices-
dc.subjectTheoretical result-
dc.titleMagnetic field effects on the electroluminescence of organic light emitting devices: A tool to indicate the carrier mobilityen_HK
dc.typeArticleen_HK
dc.identifier.emailChoy, WCH:chchoy@eee.hku.hken_HK
dc.identifier.authorityChoy, WCH=rp00218en_HK
dc.description.naturepublished_or_final_version-
dc.identifier.doi10.1063/1.3505343en_HK
dc.identifier.scopuseid_2-s2.0-77958476954en_HK
dc.identifier.hkuros188407en_US
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-77958476954&selection=ref&src=s&origin=recordpageen_HK
dc.identifier.volume97en_HK
dc.identifier.issue16en_HK
dc.identifier.spage163302-1en_US
dc.identifier.epage163302-3en_US
dc.identifier.isiWOS:000283502100075-
dc.publisher.placeUnited Statesen_HK
dc.identifier.scopusauthoridDing, BF=16309026400en_HK
dc.identifier.scopusauthoridYao, Y=8918961600en_HK
dc.identifier.scopusauthoridSun, ZY=36570876500en_HK
dc.identifier.scopusauthoridWu, CQ=8601010500en_HK
dc.identifier.scopusauthoridGao, XD=35083373600en_HK
dc.identifier.scopusauthoridWang, ZJ=36619224000en_HK
dc.identifier.scopusauthoridDing, XM=7401929191en_HK
dc.identifier.scopusauthoridChoy, WCH=7006202371en_HK
dc.identifier.scopusauthoridHou, XY=13405684400en_HK
dc.identifier.citeulike8529363-

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