Light-emitting component and process for its preparation

US7355197B2 · kind B2 · utility

Assignee

• Novaled GmbH · DE

Inventors

• Jan Blochwitz-Nimoth · Dresden, DE
• Gildas Sorin · Dresden, DE

Key dates

• Filing date: Aug 27, 2004
• Grant date: Apr 8, 2008
• Expiry date: Mar 26, 2025

Classification

• Technology area (CPC H): Electricity
• CPC primary: H10K85/631

Abstract

A light-emitting component comprising organic layers and having several layers between a base contact and a cover contact, the corresponding process for its preparation. At least one polymer layer and two molecular layers are arranged, so that when the cover contact is a cathode, the layer adjacent to the cover contact is designed as an electron-transporting molecular layer and is doped with an organic or inorganic donor, the electron-transporting layer comprising a principal organic substance and a donor-type doping substance, the molecular weight of the dopant being more than 200 g/mole. When the cover contact is an anode, the layer adjacent to the cover contact is designed as a p-doped hole-transporting molecular layer and is doped with an organic or inorganic acceptor, the hole-transporting layer comprising a principal organic substance and an acceptor-like doping substance, the molecular weight of the dopant being more than 200 g/mole.