KIT | KIT-Bibliothek | Impressum

Accurate optical simulation of nano-particle based internal scattering layers for light outcoupling from organic light emitting diodes

Egel, Amos; Gomard, Guillaume; Kettlitz, Siegfried W; Lemmer, Uli

Abstract (englisch):
We present a numerical strategy for the accurate simulation of light extraction from organic light
emitting diodes
(
OLEDs
)
comprising an internal nano-particle based scattering layer. On the one
hand, the light emission and propagation through the OLED thin
fi
lm system
(
including the
scattering layer
)
is treated by means of rigorous wave optics calculations using the
T
-matrix
formalism. On the other hand, the propagation through the substrate is modeled in a ray optics
approach. The results from the wave optics calculations enter in terms of the initial substrate
radiation pattern and the bidirectional re
fl
ectivity distribution of the OLED stack with scattering
layer. In order to correct for the truncation error due to a
fi
nite number of particles in the
simulations, we extrapolate the results to in
fi
nitely extended scattering layers. As an application
example, we estimate the optimal particle
fi
lling fraction for an internal scattering layer in a
realistic OLED geometry. The presented treatment is designed to emerge from electromagnetic
theory with as few additional assumptions as possible ... mehr


Zugehörige Institution(en) am KIT Institut für Mikrostrukturtechnik (IMT)
Lichttechnisches Institut (LTI)
Publikationstyp Zeitschriftenaufsatz
Jahr 2017
Sprache Englisch
Identifikator DOI: 10.1088/2040-8986/aa5523
ISSN: 2040-8978, 2040-8986, 1464-4258, 1741-3567
KITopen ID: 1000065499
HGF-Programm 43.23.04; LK 01
Erschienen in Journal of optics
Band 19
Heft 2
Seiten 025605
Bemerkung zur Veröffentlichung http://iopscience.iop.org/article/10.1088/2040-8986/aa5523/meta;jsessionid=58FA2C7B64F9DE9B5E0B2D0711C6C974.c4.iopscience.cld.iop.org
Schlagworte Organic light emitting diode, Outcoupling, T-matrix, Simulation, Scattering, Nanoparticles
KIT – Die Forschungsuniversität in der Helmholtz-Gemeinschaft KITopen Landing Page