Metal coatings, conductive nanoparticles and applications of the same

• US 8,749,869 B2
• Filed: 02/13/2012
• Issued: 06/10/2014
• Est. Priority Date: 07/03/2008
• Status: Active Grant

• Current Assignee: Ajjer, LLC
• Original Assignee: Ajjer, LLC
• Inventors: Agrawal, Anoop, Cronin, John P.
• Primary Examiner(s): PINKNEY, DAWAYNE
• Application Number:
  US13/372,384
• Publication Number:
  US 20120141779A1
• Time in Patent Office: 848 Days
• Field of Search: 359/259, 359315-316, 359/237, 359/263, 359252-254, 359/318, 359265-275, 359/277, 359245-250, 359/242, 249/24, 249/113, 345/49, 345/105, 250/70, 438/929
• US Class Current: 359/275
• CPC Class Codes: G02F 1/155 Electrodes
• CPC Class Codes: G02F 2001/164 the electrolyte is made of polymers
• CPC Class Codes: H01B 1/02 mainly consisting of metals or alloys
• CPC Class Codes: H01B 1/026 Alloys based on copper
• CPC Class Codes: Y10T 428/256 Heavy metal or aluminum or compound thereof

Abstract

This invention discloses corrosion resistant metal compositions that may be used to form nanoparticles or for coating of particles. Further, such particles may be used to fabricate printable transparent conductors that may be used in electronic devices. Electrochromic displays formed using such conductors are described.

Claims

1. Conductive busbars and connectors, for use in flexible electronic devices, electrochromic devices, displays, light emitting and light control devices, wherein said conductive busbars and connectors are deposited from liquid suspensions comprising conductive nanoparticles, wherein the said conductive nanoparticles are formed of conductive and corrosion resistant metal alloys, wherein the said alloy is selected from at least one of

(a) a silver comprising alloy in which the alloying element is at least one of Be, Cu, Ge, Ni, Ru, Rh, Au, Pt, Pd, La, Ce, Nd, Sm and Eu, and

(b) a copper comprising alloy in which the alloying element s at least one of Ag, Be, Ge, Ni, Ru, Rh, Au, Pt, Pd, La, Ce, Nd, Sm and Eu.

2. Conductive busbars and connectors as in claim 1, wherein the nanoparticles are nanofibers.

3. Conductive busbars and connectors as in claim 1, wherein the nanoparticles are corrosion resistant alloys which comprise at least one of copper and silver.

4. Transparent conductive layer with a surface resistivity of at last 100 ohms/square, wherein the said conductive layer comprising of conductive nanoparticles, wherein the said conductive nanoparticles are formed of conductive and corrosion resistant metal alloys, wherein the said alloy is selected from at least one of

(a) a silver comprising alloy in which the alloying element is at least one of Be, Cu, Ge, Ni, Ru, Rh, Au, Pt, Pd, La, Ce, Nd, Sm and Eu, and

(b) a copper comprising alloy in which the alloying element, is at least one of Ag, Be, Ge, Ni, Ru, Rh, Au, Pt, Pd, La, Ce, Nd, Sm and Eu.

5. A transparent conductive layer as in claim 4, wherein the nanoparticles are nanofibers.

6. A transparent conductive layer comprising conductive nanoparticles formed on a substrate, wherein the said conductive nanoparticles comprise of at least one of copper and silver, and are further coated with a conductive layer of different metallic composition that reduces the corrosion of the said conductive nanoparticles and the said different metallic composition comprises at least one of Ag, Be, Cu, Ge, Ni, Ru, Rh, Au, Pt, Pd, La, Ce, Nd, Sm and Eu.

7. A transparent conductive, layer as in claim 6, wherein the nanoparticles are nanofibers.

8. A transparent conductive layer as in claim 6, wherein the corrosion resistant material with a different composition is selected from at least one of (a) silver comprising alloy is selected in which the alloying element is at least one of Be, Cu, Ge, Ni, Ru, Rh, Au, Pt, Pd, La, Ce, Nd, Sm and Eu, and

(b) a copper comprising alloy is selected in which the alloying element is at least one of Ag, Be, Ge, Ni, Ru, Rh, Au, Pt, Pd, La, Ce, Nd, Sm and Eu.

9. A solid transparent conductive layer comprising of conductive nanoparticles, wherein the said conductive nanoparticles comprise of carbon, and are further coated with a conductive corrosion resistant metallic layer comprising at least one of Ag, Be, Cu, Ge, Ni, Ru, Rh, Au, Pt, Pd, La, Ce, Nd, Sm and Eu.

10. A transparent conductive layer as in claim 9, wherein the conductive nanoparticles are graphite.

11. A transparent conductive layer as in claim 9, wherein the conductive nanoparticles are nanofibers.