Highly efficient multilayer organic pure-blue-light emitting diodes with substituted carbazoles compounds in the emitting layer

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dc.creatorFischer, Alexis
dc.creatorForget, Sebastien
dc.creatorChenais, Sebastien
dc.creatorCastex, Marie-Claude
dc.creatorSiove, Alain
dc.creatorAdes, Dominique
dc.creatorGeffroy, Bernard
dc.creatorDenis, Christine
dc.creatorMaisse, Pascal
dc.date2006-04-06
dc.date.accessioned2026-07-07T07:11:33Z
dc.date.available2026-07-07T07:11:33Z
dc.descriptionBright blue organic light-emitting diodes (OLEDs) based on 1,4,5,8,N-pentamethylcarbazole (PMC) and on dimer of N-ethylcarbazole (N,N'-diethyl-3,3'-bicarbazyl) (DEC) as emitting layers or as dopants in a 4,4'-bis(2,2'-diphenylvinyl)-1,1'-biphenyl (DPVBi) matrix are described. Pure blue-light with the C.I.E. coordinates x = 0.153 y = 0.100, electroluminescence efficiency η_{EL} of 0.4 cd/A, external quantum efficiency η_{ext.} of 0.6% and luminance L of 236 cd/m2 (at 60 mA/cm2) were obtained with PMC as an emitter and the 2,9-dimethyl-4,7-diphenyl-1,10-phenantroline (BCP) as a hole-blocking material in five-layer emitting devices. The highest efficiencies η_{EL.} of 4.7 cd/A, and η_{ext} = 3.3% were obtained with a four-layer structure and a DPVBi DEC-doped active layer (CIE coordinates x = 0.158, y=0.169, λ_{peak} = 456 nm). The η_{ext.} value is one the highest reported at this wavelength for blue OLEDs and is related to an internal quantum efficiency up to 20%.
dc.identifierhttps://arxiv.org/abs/physics/0604050
dc.identifierhttp://arxiv.org/abs/physics/0604050
dc.identifierJournal of Physics D 39 (2006) p.917
dc.identifierdoi:10.1088/0022-3727/39/5/004
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/111798
dc.subjectOptics
dc.titleHighly efficient multilayer organic pure-blue-light emitting diodes with substituted carbazoles compounds in the emitting layer
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