Highly Efficient Phosphorescent Organic Light-Emitting Diodes Using Alkyl-Substituted Iridium Complexes as a Solution-Processible Host Material

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概要

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• We fabricated highly efficient organic light-emitting diodes (OLEDs) using the solution processible iridium complexes which have long alkyl or cycloalkyl substituents in an ancillary ligand as a host material and a red phosphorescent iridium complex as an emitting guest by spin coating method. The OLEDs emitted red phosphorescence from the guest and the luminance reached around 10,000 cd/m2. The efficiency of the OLED improved after we added an electron transport material (ETM) to the emitting layer. The OLED using a mixture of the alkyl substituted iridium complex and ETM as the host showed an external quantum efficiency of 10%.

• 2008-02-25

著者

• Tokito Shizuo

  Science And Technical Research Laboratories Nhk

• Tsuzuki Toshimitsu

  Science And Technical Research Laboratories Nhk

関連論文

• Highly Efficient Phosphorescent Organic Light-Emitting Diodes Using Alkyl-Substituted Iridium Complexes as a Solution-Processible Host Material
• Electronic Characterization of New Bright-Blue-Light-Emitting Poly(9,9-dioctylfluorenyl-2,7-diyl)-End Capped With Polyhedral Oligomeric Silsesquioxanes

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