Organic optoelectronic device and method for the encapsulation thereof

US9209366B2 · kind B2 · utility

Assignee

• COMMISSARIAT A L'ENERGIE ATOMIQUE ET AUX ENERGIES ALTERNATIVES · FR

Inventors

• Tony Maindron · Grenoble, FR
• Hani Kanaan · Saint-Martin-d'Hères, FR

Key dates

• Filing date: Jul 4, 2012
• Grant date: Dec 8, 2015
• Expiry date: Jul 4, 2032

Classification

• Technology area (CPC H): Electricity
• CPC primary: H10K2102/351

Abstract

The invention relates to an organic optoelectronic device which is protected from ambient air by a sealed encapsulation structure of the type including at least one thin layer. The device includes a substrate; at least one light-emitting unit deposited on the substrate, incorporating internal electrodes and external electrodes defining an active zone and, between the electrodes, a stack of organic films; and a sealed encapsulation structure having one or more thin layers including at least one inorganic layer placed on top of the light-emitting unit and encasing same laterally. The device also includes a pre-encapsulation structure located between the external electrode and the encapsulation structure and which includes a buffer layer covering the external electrode and contains a heterocyclic organometallic complex having a glass transition temperature above 80° C., and a barrier layer covering the buffer layer and contains a silicon oxide SiOx, wherein x is 0<x<2.