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Taeshik Earmme and Samson A. Jenekhe Solution-Processed, Alkali Metal-Salt-Doped, Electron-Transport Layers for High-Performance Phosphorescent Organic Light-Emitting Diodes Advanced Functional Materials 22

Version of Record online: 30 JUL 2012 | DOI: 10.1002/adfm.201201366

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High-performance blue phosphorescent organic light-emitting diodes (PhOLEDs) are achieved by orthogonal solution-processing of small-molecule electron-transport material (ETM) doped with an alkali metal salt, Cs2CO3 or Li2CO3. It is shown for the first time that various ETMs can be solution-doped with alkali metal salt to fabricate high-performance PhOLEDs. The demonstrated approach is a promising strategy for solution-processed organic electronic devices.

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