Organic electroluminescent device

US9236578B2 · kind B2 · utility

Assignee

• Merck Patent GmbH · DE

Inventors

• Anja Gerhard · Egelsbach, DE
• Philipp Stoessel · Frankfurt am Main, DE
• Dominik Joosten · Ober-Ramstadt, DE
• Holger Heil · Frankfurt am Main, DE
• Christof Pflumm · Darmstadt, DE
• Susanne Heun · Bad Soden, DE

Key dates

• Filing date: Jun 24, 2011
• Grant date: Jan 12, 2016
• Expiry date: Dec 17, 2031

Classification

• Technology area (CPC H): Electricity
• CPC primary: H10K2101/40

Abstract

The present invention relates to phosphorescent organic electroluminescent devices include at least one phosphorescent emitter and a matrix material in the emitting layer, where certain conditions must be satisfied for the positions of the triplet energy and the HOMO and LUMO.