Light emitting component comprising organic layers

US7074500B2 · kind B2 · utility

Assignee

• Novaled GmbH · DE

Inventors

• Martin Pfeiffer · Winnenden, DE
• Karl Leo · Dresden, DE
• Jan Blochwitz-Niemoth · Dresden, DE
• Xiang Zhou · State College, US

Key dates

• Filing date: Nov 20, 2001
• Grant date: Jul 11, 2006
• Expiry date: Feb 18, 2022

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10T428/26

Abstract

The invention relates to a light-emmiting component having organic layers, in particular to an organic light-emmiting diode. The component has at least one doped charge carrier transport layer (2), a light-emmiting layer (4) and contact layers (1, 5) and also has a blocking layer (3; 3′) wherein an organic material is provided between the charge carrier transport layer (2, 2′) and the light-emmiting layer (4). The energy levels of the charge carried transport layer are chosen in such a way that efficient doping is possible and the blocking layer nevertheless ensures that non-radiating recombination processes on the interface with the emitting layer are prevented.