Photo-luminescence layer in the optical spectral region and in adjacent spectral regions

US7101626B1 · kind B1 · utility

Assignee

• OSRAM GmbH · DE

Inventors

• Hartmut Fröb · Reinhardtsgrimma, DE
• Karl Leo · Dresden, DE
• Matthias Kurpiers · Dresden, DE

Key dates

• Filing date: Feb 23, 2000
• Grant date: Sep 5, 2006
• Expiry date: Feb 23, 2020

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C09K11/06
• WIPO field: Basic materials chemistry
• WIPO sector: Chemistry

Abstract

This invention relates to a photoluminescent layer in the optical and adjoining spectral regions based on a solid solution of organic dyes. The photoluminescent layer consists of organic dye molecules with a low dye concentration and a matrix material of metal oxides, with the matrix material having a slightly sub-stoichiometric oxygen content. A method and a device for producing the photoluminescent layer are described.