Open AccessMultilayer transparent electrode for organic light-emitting diodes: tuning its optical characteristics
Author(s) -
Hyunsu Cho,
Changhun Yun,
Seunghyup Yoo
Publication year - 2010
Publication title -
optics express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.18.003404
Subject(s) - materials science , oled , optoelectronics , transmittance , luminous efficacy , optics , electrode , dielectric , diode , luminous flux , light emitting diode , light source , nanotechnology , physics , layer (electronics) , quantum mechanics
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.