Advanced Functional Materials

Cover image for Vol. 25 Issue 44

23_31/2013Light-Emitting Diodes: Organic Light-Emitting Diodes with 30% External Quantum Efficiency Based on a Horizontally Oriented Emitter (Adv. Funct. Mater. 31/2013)

Green phosphorescent organic light-emitting diodes (OLEDs) based on a horizontally oriented emitter are analysed by J.-J. Kim and co-workers on page 3896. They demonstrate that theoretical analysis based on the orientation factor (the ratio of horizontal dipoles to total dipoles) and the quantum yield of the emitter predicts that the maximum EQE of OLEDs with this emitter is about 30%, matching experimental data, indicating that the electrical loss of the OLEDs is negligible and the device structure can be utilized as a platform to demonstrate the validity of optical modeling.

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