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1. (WO1998053507) SATURATED FULL COLOR STACKED ORGANIC LIGHT EMITTING DEVICES

Pub. No.:    WO/1998/053507    International Application No.:    PCT/US1998/010266
Publication Date: Fri Nov 27 00:59:59 CET 1998 International Filing Date: Thu May 21 01:59:59 CEST 1998
IPC: H01L 27/32
H01L 51/50
H01L 51/52
Applicants: THE TRUSTEES OF PRINCETON UNIVERSITY
Inventors: SHEN, Zilan
FORREST, Stephen, R.
BURROWS, Paul
Title: SATURATED FULL COLOR STACKED ORGANIC LIGHT EMITTING DEVICES
Abstract:
Optical cavities in a stacked organic light emitting device (SOLEDs) can shift or attenuate the light emitted by the individual organic light emitting devices (OLEDs) in the stack. Interference caused by reflections within the stack, absorption, positioning of the light source, and the polarization of the emitted light can all determine how the spectra of the emitted light are affected by the SOLED structure. A detailed model that provides a good fit to measured SOLED emissions can be used to predict how a SOLED will affect light emitted by OLEDs. As a result, SOLED geometries that will optimize color saturation and external quantum efficiency can be predicted.