Electronic device including an organic active layer and process for forming the electronic device

• US 8,173,995 B2
• Filed: 12/20/2006
• Issued: 05/08/2012
• Est. Priority Date: 12/23/2005
• Status: Active Grant

• Current Assignee: LG Chem Limited (LG Corporation)
• Original Assignee: E. I. du Pont de Nemours and Company (Corteva, Inc.)
• Inventors: Prakash, Shiva, Ramakrishnan, Ed Sundaram
• Primary Examiner(s): Ho, Anthony
• Application Number:
  US11/642,158
• Publication Number:
  US 20070176173A1
• Time in Patent Office: 1,966 Days
• Field of Search: 257/40, 257/E51.001, 257/E51.024
• US Class Current: 257/40
• CPC Class Codes: H10K 50/828 Transparent cathodes, e.g. comprising thin metal layers
• CPC Class Codes: H10K 50/841 Self-supporting sealing arrangements
• CPC Class Codes: H10K 50/844 Encapsulations

Abstract

An electronic device can include an organic active layer and an electrode. In one aspect, the electrode can further include a first layer that is conductive, and a second layer that is conductive. The second layer can include a defect extending at least partly through a thickness of the second conductive layer. The electrode can also include a third layer lying within and substantially filling the defect, wherein each of the second and third layers includes a same metallic element.

In another aspect, a process for forming an electronic device can include forming an organic active layer and forming a first layer that is conductive and is part of an electrode. The process can also include forming a second layer and exposing the second layer to a first plasma to form a first compound from the second layer.

Claims

1. An electronic device, comprising:

an organic active layer; and

an electrode further comprising;

a first layer that is conductive;

a second layer that is conductive, wherein the second layer includes a defect extending at least partly through a thickness of the second conductive layer and is more than the distance of the root mean square roughness of a surface of such layer but not completely through the second layer; and

a third layer lying within and substantially filling the defect, wherein each of the second and third layers comprise a same metallic element.

2. The electronic device of claim 1, further comprising another electrode wherein the organic active layer lies between the electrodes.

3. The electronic device of claim 1, wherein the first conductive layer comprises a Group 1 metal, a Group 2 metal, or any combination thereof.

4. The electronic device of claim 1, wherein the second conductive layer comprises aluminum, silver, copper, chromium, or any combination thereof.

5. The electronic device of claim 1, wherein the third layer comprises a nitrogen-containing, oxygen-containing, fluorine-containing or any combination thereof material.

6. The electronic device of claim 1, wherein the electrode further comprises a fourth layer overlying the third layer, the fourth layer including a metallic oxide compound, a metallic nitride compound, a metallic fluoride compound or any combination thereof.