Metal coatings, conductive nanoparticles and applications of the same

• US 8,130,438 B2
• Filed: 07/02/2009
• Issued: 03/06/2012
• Est. Priority Date: 07/03/2008
• Status: Expired due to Fees

• Current Assignee: Ajjer, LLC
• Original Assignee: Ajjer, LLC
• Inventors: Agrawal, Anoop, Cronin, John P.
• Primary Examiner(s): Pinkney, Dawayne
• Application Number:
  US12/497,535
• Publication Number:
  US 20100002282A1
• Time in Patent Office: 978 Days
• Field of Search: 359/259, 359315-316, 359/237, 359/263, 359252-254, 359/318, 359265-275, 359/277, 359245-247, 359248-250, 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. A transparent conductive layer formed by incorporating conductive nanoparticles into a transparent layer that is applied to a substrate, wherein the composition of the conductive nanoparticles comprises at least one of;

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

(b) a copper 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.

2. A transparent conductive layer as in claim 1 where the layer further comprises of conductively coated microfibers.

3. A transparent conductive layer as in claim 1, where the layer is deposited from liquid suspensions.

4. A transparent conductive layer as in claim 1, where the layer is used as a conductive electrode for a display device.

5. A transparent conductive layer as in claim 1, where the layer is used as a conductive electrode in an EC device.

6. Liquid suspensions for depositing conductive layers, busbars and connectors, for use in flexible electronic devices, electrochromic devices, displays, light emitting and light control devices, wherein such suspensions comprise conductive particles, wherein the said conductive particles are formed of at least one of nanoparticles and microfibers which are coated with conductive materials, and the said conductive materials comprising any one of

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

(b) a copper 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.

7. Liquid suspensions as in claim 6 wherein the microfibers are non-conductive.

8. Liquid suspensions as in claim 6 wherein the nanoparticles comprise of exfoliated silicates.

9. An electrochromic device comprising a transparent conductor, wherein the transparent conductor comprises conductive nanoparticles incorporated into a transparent layer that is applied to a substrate, wherein the composition of the conductive nanoparticle material comprises at least one of

(a) silver 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 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.

10. An electrochromic device as in claim 9, wherein the said device is used as a window to attenuate solar energy transmission.

11. Liquid suspensions for depositing conductive layers, busbars and connectors, for use in flexible electronic devices, electrochromic devices, displays, light emitting and light control devices, wherein such suspensions comprise-conductive particles, wherein the said conductive particles are formed of at least one of exfoliated silicate nanoparticles and microfibers which are further coated with conductive and corrosion resistant metal alloys.