Enhanced Luminance Efficiency of Organic Light-Emitting Diodes with Two-Dimensional Photonic Crystals

Abstract

Introducing p − 1 new parameters into the multilinear relations, we extend the standard unitary parasupersymmetry algebra of order p so that by embedding the quantum solvable models possessing gl(2, c) Lie algebra symmetry into it, the partitions of integer numbers p − 1 and 1 2 p(p − 1) are established. These two partitions are performed by the new parameters and the product of new parameters with their labels, respectively. The former partition is just necessary for the real form h 4 ; however, both of them are essential for the real forms u(2) and u(1, 1). By occupying these parameters with arbitrary values, the energy spectra are determined by the mean value of proposed parameters for the real form h 4 with their label weight function as well as for the real forms u(2) and u(1, 1) with the weight function of their squared label. So for the given energies, the multilinear behaviour of parasupercharges is not specified uniquely by varying the new parameters continuously.

Design and Modeling for Enhancement of Light Extraction in Light-Emitting Diodes With Archimedean Lattice Photonic Crystals

“…This method can be used to describe optical properties observable in complex structures. A schematic diagram of the general organic LED structure [15][16][17] shown in Fig. 2 is adopted for simulation.…”

Numerical Investigation of a 2D-Grating for Light Extraction of a Bottom Emitting OLED

“…Deposition of the organic layers on a corrugated substrate has been proven to increase the efficiency for a photoluminiscent (PL) OLED [3]. Using a periodic grating at the organic layer-glass substrate interface increases out coupling for both electroluminescent (EL) and PL devices, [4] and [5]. Numerical calculations indicate an intermediate layer between organic layers and glass substrate can also improve efficiency [6].…”

Modelling of light extraction from OLEDs

“…Photonic crystals are introduced in OLEDs to amplify light emission. [1][2][3][4][5][6] Periodic structures can also outcouple guiding modes. [7][8][9][10][11][12][13][14] Scattering layers redirect light captured in the glass substrate and in the high-refractive OLED multilayer and homogenize the angular and spectral output diagrams.…”