Organic electroluminescent device

US9356242B2 · kind B2 · utility

Assignee

• Merck Patent GmbH · DE

Inventors

• Joachim Kaiser · Frankfurt am Main, DE
• Edgar Boehm · Griesheim, DE

Key dates

• Filing date: Sep 8, 2012
• Grant date: May 31, 2016
• Expiry date: Sep 8, 2032

Classification

• Technology area (CPC H): Electricity
• CPC primary: H10K2101/90
• WIPO field: Basic materials chemistry
• WIPO sector: Chemistry

Abstract

An organic electroluminescent device that includes at least two phosphorescent emitting layers, where phosphorescent emitter layer 1 comprises a hole-conducting matrix material and two different phosphorescent emitters, and phosphorescent emitter layer 2 comprises an electron-conducting matrix material and a phosphorescent emitter.