Single-doped white oleds with extraction layer doped with down-conversion red emitters

Abstract

A white organic light emitting diode (OLED) having a substrate, a first electrode, a hole transporting layer proximate the first electrode, a second electrode, an electron transporting layer proximate the second electrode, an emissive layer between the hole transporting layer and the electron transporting layer, and a red-shifting layer optically coupled to the emissive layer. The red-shifting layer includes a red-shifting down-conversion emitter, and can be a scattering layer between the first electrode and the substrate, an C extraction layer optically coupled to the white OLED, or a microlens layer optically coupled to the white OLED.

Dependencies are inferred from the claim text.