Organic electroluminescent element

US8003227B2 · kind B2 · utility

Assignee

• Merck Patent GmbH · DE

Inventors

• Horst Vestweber · Prüm, DE
• Anja Gerhard · Egelsbach, DE
• Philipp Stössel · Frankfurt, DE

Key dates

• Filing date: Nov 24, 2004
• Grant date: Aug 23, 2011
• Expiry date: Dec 19, 2027

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y02P70/50
• WIPO field: Organic fine chemistry
• WIPO sector: Chemistry

Abstract

The present invention relates to the improvement of phosphorescent organic electroluminescent devices by using materials of the formula (1), preferably triazines, pyrimidines, pyridazines and pyrazines, in the hole-blocking layer.