Light-Emitting Diodes: Organic Light-Emitting Diodes with 30% External Quantum Efficiency Based on a Horizontally Oriented Emitter (Adv. Funct. Mater. 31/2013)(page 3829)

Sei-Yong Kim, Won-Ik Jeong, Christian Mayr, Young-Seo Park, Kwon-Hyeon Kim, Jeong-Hwan Lee, Chang-Ki Moon, Wolfgang Brütting and Jang-Joo Kim

Article first published online: 12 AUG 2013 | DOI: 10.1002/adfm.201370153

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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