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Updated: Apr 19, 2026

Development of Efficient OLEDs from Solution Deposition
Published on: November 4, 2022
Unlocking the full potential of conducting polymers for high-efficiency organic light-emitting devices
Yi-Hsiang Huang1, Wei-Lung Tsai, Wei-Kai Lee
1Department of Electrical Engineering, Graduate Institute of Electronics Engineering and Graduate Institute of Photonics and Optoelectronics and Innovative Photonics Advanced Research Center (i-PARC), National Taiwan University, Taipei, 10617, Taiwan.
Abstract:
By carefully tuning the thicknesses of low-optical index PEDOT:PSS and high-index ITO layers in organic light-emitting devices (OLEDs), very high optical coupling efficiencies can be obtained through the generation of appropriate microcavity effects. These experiments result in an external quantum efficiency (EQE) of 33.7% for green phosphorescent OLEDs and even higher EQEs of 54.3% can be obtained by adopting an external out-coupling lens.
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