Azabenzimidazole carbene complexes as efficiency booster in OLEDs

US10374172B2 · kind B2 · utility

Assignee

• UDC IRELAND LIMITED · IE

Inventors

• Stefan Metz · Dublin, IE
• Soichi Watanabe · Mannheim, DE
• Thomas Geßner · Heidelberg, DE
• Korinna Dormann · Bad Dürkheim, DE
• Peter Murer · Oberwil, CH
• Christian Lennartz · Dublin, IE
• Ute Heinemeyer · Neustadt, DE
• Glauco Battagliarin · Mannheim, DE

Key dates

• Filing date: Mar 19, 2014
• Grant date: Aug 6, 2019
• Expiry date: Mar 23, 2035

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y02E10/549
• WIPO field: Electrical machinery, apparatus, energy
• WIPO sector: Electrical engineering

Abstract

An organic electronic device comprising at least one hole-transport material and/or at least one electron/exciton blocker material, wherein said at least one hole-transport material and/or said at least one electron/exciton blocker material is an Ir metal-carbene complex comprising one, two or three specific bidentate azabenzimidazole ligands; a hole transport layer or an electron/exciton blocking layer, comprising at least one Ir metal-carbene complex, comprising one, two or three specific bidentate azabenzimidazole ligands; an apparatus selected from the group consisting of stationary visual display units, mobile visual display units, illumination units, units in items of clothing, units in furniture and units in wallpaper, comprising the organic electronic device of the present invention or the hole transport layer or the electron/exciton blocking layer of the present invention; and the use of an Ir metal-carbene complex comprising one, two or three specific bidentate azabenzimidazole ligands according to the present invention as hole-transport material and/or electron/exciton blocker material.