Transparent nanowire electrode comprising a functional organic layer

Patent metadata

Field	Value
Publication number	US-10109387-B2
Application number	US-201615186087-A
Country	US
Kind code	B2
Filing date	Jun 17, 2016
Priority date	Dec 19, 2013
Publication date	Oct 23, 2018
Grant date	Oct 23, 2018

Abstract

What is presented here is a transparent electrode having: at least one carrier layer for stabilizing the electrode; at least one electrically conductive layer containing metal nanowires, which is produced by spreading a suspension of a liquid and the metal nanowires surrounded by a stabilizing layer, along the carrier layer and drying same by removing the liquid; and at least one functional organic layer formed along the carrier layer, which, while the electrically conductive layer dries, by an electrical interaction with the metal nanowires and/or with the stabilizing layers of the metal nanowires, changes an interaction between the metal nanowires and the stabilizing layers such that the result is a substance-to-substance bond between the metal nanowires.

First claim

The invention claimed is:

1. A transparent electrode comprising:
at least one carrier layer for stabilizing the electrode;
at least one electrically conductive layer comprising metal nanowires, which is produced by spreading a suspension of a liquid and the metal nanowires, which are surrounded by stabilizing layers in such way that each of the metal nanowires is surrounded by one of the stabilizing layers, along the carrier layer and drying same by removing the liquid; and
at least one functional organic layer formed along the carrier layer,
wherein
the organic layer, while the electrically conductive layer dries, by an interaction with the metal nanowires and/or with the stabilizing layers of the metal nanowires, changes an interaction between the metal nanowires and the stabilizing layers such that the result is a substance-to-substance bond between the metal nanowires.

2. The electrode in accordance with claim 1 , wherein the organic layer predominantly comprises electrically non-conducting components.

3. The electrode in accordance with claim 2 , wherein the mass-related portion of the non-conducting components in the organic layer is at least 80%, advantageously at least 90%, and particularly advantageously at least 95%.

4. The electrode in accordance with claim 1 , wherein the carrier layer is a flexible film.

5. The electrode in accordance with claim 1 , wherein the metal nanowires comprise silver nanowires, copper nanowires, metal nanowires of alloys of different metals and/or core-shell metal nanowires.

6. The electrode in accordance with claim 1 , wherein the organic layer is formed between the carrier layer and the electrically conductive layer.

7. The electrode in accordance with claim 6 , wherein the electrically conductive layer is provided with a transparent cover layer on a side facing away from the organic layer.

8. The electrode in accordance with claim 1 , wherein the organic layer is formed on that side of the electrically conductive layer facing away from the carrier layer.

9. The electrode in accordance with claim 1 , wherein the organic material comprises a water-soluble polymer and/or an alcohol-soluble polymer, in particular an uncharged polymer, anionic polymer and/or cationic polymer.

10. The electrode in accordance with claim 1 , wherein the organic material comprises a tenside, in particular a non-ionic tenside, anionic tenside, cationic tenside and/or amphoteric tenside.

Assignees

• Fraunhofer Ges Forschung
• Univ Dresden Tech

Inventors

• Mueller-Meskamp Lars
• Selzer Franz
• Bormann Jan Ludwig
• Weiss Nelli
• Sachse Christoph
• Gaponik Nikolai
• Eychmueller Alexander

Classifications

• H01L31/1884

  Electricity · mapped topic

• H01L2251/301

  Electricity · mapped topic

• H01L2933/0016

  Electricity · mapped topic

• H01B1/22 Primary

  the conductive material comprising metals or alloys · CPC title

• H01L51/442

  Electricity · mapped topic