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Chil Won Lee and Jun Yeob Lee Above 30% External Quantum Efficiency in Blue Phosphorescent Organic Light-Emitting Diodes Using Pyrido[2,3-b]indole Derivatives as Host Materials Advanced Materials 25

Article first published online: 21 JUN 2013 | DOI: 10.1002/adma.201301091

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High quantum efficiencies of above 30% in blue phosphorescent organic light emitting diodes are achieved by using novel pyridoindole-based bipolar host materials. A high quantum efficiency of 30.0% is obtained at 100 cd/m2 by using the new host materials.

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