Abstract
Novel red phosphorescent emitter bis(2,3-diphenylquinolinato- N, C 2’) iridium(acetylacetonate) [(23dpq) 2Ir(acac)] has been synthesised and fully characterized. A highly efficient red organic light-emitting diode was fabricated by using (23dpq) 2Ir(acac) as an emitter, in which (23dpq) 2Ir(acac) was synthesised from a well-designed ligand-2,3-diphenylquinoline. Electroluminescent device with a configuration of ITO/2-TNATA/NPB/BAlq:(23dpq) 2Ir(acac)/AlQ 3/LiF/Al was fabricated. The device using (23dpq) 2Ir(acac) as a dopant showed pure-red emission with 1931 CIE (Commission International de L’Eclairage) chromaticity coordinates x = 0.66, y = 0.34.
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