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Opt Express. 2010 Feb 15;18(4):3404-14. doi: 10.1364/OE.18.003404.

Multilayer transparent electrode for organic light-emitting diodes: tuning its optical characteristics.

Author information

  • 1Department of Electrical Engineering, Korea Advanced Institute of Science and Technology (KAIST), 373-1 Guseong-dong, Daejeon 305-701, Republic of Korea.

Abstract

The optical properties of dielectric-metal-dielectric (DMD) transparent electrodes are investigated from the perspectives of organic light-emitting diodes (OLEDs). A joint experimental and theoretical study showed that the optical characteristics of OLEDs based on DMD electrodes can be widely tuned to fulfill the requirements of a target application through careful control of the microcavity effect, transmittance of DMD electrodes, and a correlation of these two factors with the emission spectra of the emitted materials. Upon variation of the DMD structure, near-Lambertian emission and a 100% improvement in the luminous efficiency are demonstrated, respectively. Optimization strategies are also discussed that are relevant to forward luminous efficiency, total optical power, and angular/ spectral characteristics.

PMID:
20389350
[PubMed - indexed for MEDLINE]
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