The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Nov. 08, 2005
Filed:
Sep. 30, 2003
Rahul Gupta, Santa Clara, CA (US);
Florian Pschenitzka, San Jose, CA (US);
Vi-en Choong, San Jose, CA (US);
Pierre-marc Allemand, San Jose, CA (US);
Rahul Gupta, Santa Clara, CA (US);
Florian Pschenitzka, San Jose, CA (US);
Vi-En Choong, San Jose, CA (US);
Pierre-Marc Allemand, San Jose, CA (US);
Osram Otpo Semiconductors GmbH, Regensburg, DE;
Abstract
In an embodiment of the invention, an electronic device includes an interfacial layer with traps. This interfacial layer is between an electrode and an organic layer, and if the electrode was adjacent to the organic layer, the energy barrier between these two layers is such that the current through the organic layer is limited by charge injection into this layer rather than the transport properties of the organic layer. The traps are used to accumulate charges of one charge type (e.g., either electrons or holes) within the interfacial layer. By accumulating charges, the bands of the interfacial layer are bent so that charges can tunnel from the electrode to the organic layer thus increasing the efficiency of the electronic device and allowing organic layers to be used within an electronic device that otherwise would be too inefficient for use in that device.