Light-emitting diodes from fluorene-based Pi-conjugated polymers

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DOIResolve DOI: http://doi.org/10.1021/cm0001298
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TypeArticle
Journal titleChemistry of Materials
Volume12
Issue7
Pages19311936; # of pages: 6
AbstractWe report the synthesis of novel fluorene-based π-conjugated polymers and the investigation of their electroluminescent properties in organic light-emitting devices. We also report on the photo- and electroluminescence of materials of the same class whose synthesis was recently published. The alternated incorporation of phenylene or thiophene moieties in fluorene-based π-conjugated polymers leads to the tunability of the electroluminescent properties. The spectral emission varies from blue to green or yellow, depending on the composition of the copolymers. To enhance the luminous efficiency of the devices, the hole injection and hole transport into the polymer were improved by insertion of an insulating buffer layer and the incorporation of efficient hole transport material in the polymer. The insertion of a charge injection layer such as LiF and a hole transport layer such as N,N‘-diphenyl-N,N‘-bis(3-methylphenyl)-1,1-biphenyl-4,4‘-diamine significantly improves the electroluminescence efficiency of the diode from 4.5 to 125 cd/m².
Publication date
LanguageEnglish
AffiliationNational Research Council Canada; NRC Institute for Microstructural Sciences
Peer reviewedNo
NPARC number12743806
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Record identifiera3e32e09-24cb-4fee-951d-1dc378893784
Record created2009-10-27
Record modified2016-05-09
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