IJCMP | The Estimation of Enhanced Outcoupling for OLEDs with Isotropically Scattering Materials

Indexing and Abstracting

The Estimation of Enhanced Outcoupling for OLEDs with Isotropically Scattering Materials

Guy Francis Mongelli

International Journal of Chemistry, Mathematics And Physics(IJCMP), Vol-3,Issue-1, January - February 2019, Pages 9-11 , 10.22161/ijcmp.3.1.3

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Abstract:

This manuscript uses classical geometrical optics and the convergence of an infinite Fourier series to derive a mathematical equation for the out-coupling efficiency of classical scattering-enhanced OLEDs. Several simple assumptions are made regarding how light interacts with scattering media. It describes the extent of efficiency improvement in terms of nanoparticle properties and the revised out-coupling efficiency limitation. The albedo is the ratio of scattering to extinction cross-sections, where extinction is scattering plus absorption. Albedo indicates how much of the light that interacts with a particle is re-emitted or retained to move around the OLED device further. An estimation of the out-coupling efficiency observed when nanoparticles of various albedo values are incorporated into the simplified OLED structure is performed.

Keywords:

organic light emitting diodes (OLEDs), outcoupling efficiency, plasmonics, scattering.

References:

[1] K. Saxena, V.K. Jain, D.S. Mehta, “A review on the light extraction techniques in organic electroluminescent devices” Optical Materials 32 (2009).
[2] T.R. Jensen, M.L. Duval, K.L. Kelly, A.A. Lazarides, G.C. Schatz, R.P. Can Duyne;
[3] “Nanosphere Lithography: effect of the External Dielectric Medium on the Surface Plasmon Resonance Spectrum of a Periodic Array of Silver Nanoparticles” J. Phys. Chem. Vol. 103 (1999).
[4] E. Hecht, “Optics”, Addison Wesley Longman, Massachusetts (1998).