Coated article with low-E coating including zinc oxide inclusive layer(s) with additional metal(s)

• US 9,475,727 B2
• Filed: 11/24/2014
• Issued: 10/25/2016
• Est. Priority Date: 11/19/2012
• Status: Expired due to Fees

• Current Assignee: Guardian Glass LLC (KOCH Industries Incorporated)
• Original Assignee: Guardian Industries Corporation (KOCH Industries Incorporated)
• Inventors: Imran, Muhammad, Boyce, Brent, Lemmer, Jean-Marc, Frank, Marcus, Xu, Yongli
• Primary Examiner(s): COLGAN, LAUREN ROBINSON
• Application Number:
  US14/551,384
• Publication Number:
  US 20150079409A1
• Time in Patent Office: 701 Days
• Field of Search: 428/428, 428/432, 428/433, 428/434, 428/688, 428/689, 428/699, 428/701, 428/702
• US Class Current: 1/1
• CPC Class Codes: C03C 17/3429 at least one of the coatings being a non-oxide coating
• CPC Class Codes: C03C 17/3435 comprising a nitride, oxynitride, boronitride or carbonitride
• CPC Class Codes: C03C 17/3626 one layer at least containing a nitride, oxynitride, boronitride or carbonitride
• CPC Class Codes: C03C 17/3639 Multilayers containing at least two functional metal layers
• CPC Class Codes: C03C 17/3644 the metal being silver
• CPC Class Codes: C03C 17/3652 the coating stack containing at least one sacrificial layer to protect the metal from oxidation
• CPC Class Codes: C03C 17/366 Low-emissivity or solar control coatings
• CPC Class Codes: C03C 17/3681 the multilayer coating being used in glazing, e.g. windows or windscreens
• CPC Class Codes: C03C 2217/216 ZnO
• CPC Class Codes: C03C 2217/22 ZrO2
• CPC Class Codes: C03C 2217/228 Other specific oxides
• CPC Class Codes: C03C 2217/24 Doped oxides
• CPC Class Codes: C03C 2217/256 Ag
• CPC Class Codes: C03C 2217/281 Nitrides

Abstract

A coated article includes a coating, such as a low emissivity (low-E) coating, supported by a substrate (e.g., glass substrate). The coating includes at least one dielectric layer including zinc oxide that is doped with another metal(s). The coating may also include one or more infrared (IR) reflecting layer(s) of or including material such as silver or the like, for reflecting at least some IR radiation. In certain example embodiments, the coated article may be heat treated (e.g., thermally tempered, heat bent and/or heat strengthened). Coated articles according to certain example embodiments of this invention may be used in the context of windows, including monolithic windows for buildings, IG windows for buildings, etc.

Claims

1. A coated article including a low-E coating on a glass substrate, the coating comprising:

first and second infrared (IR) reflecting layers comprising silver on the glass substrate a contact layer over and directly contacting the first IR reflecting layer;

a dielectric stack provided between the first and second IR reflecting layers comprising silver, and provided over the contact layer;

wherein the dielectric stack between the IR reflecting layers comprising silver comprises first and second dielectric layers each comprising an oxide of one or more of;

ZnCuNi, ZnNi, ZnNiAl, and ZnNiMg;

wherein a layer comprising silicon nitride is located between and contacting the first and second layers comprising an oxide of one or more of;

ZnCuNi, ZnNi, ZnNiAl, and ZnNiMg; and

another contact layer located under and directly contacting the second IR reflecting layer.

2. The coated article of claim 1, wherein the coating further comprises a layer comprising zinc oxide located between the glass substrate and the first IR reflecting layer comprising silver, wherein said layer comprising zinc oxide is located directly under and contacting the first IR reflecting layer comprising silver.

3. The coated article of claim 1, wherein the coated article has a visible transmission of at least 30%.

4. The coated article of claim 1, wherein the coated article has a visible transmission of at least 50%.

5. The coated article of claim 1, wherein the first and second dielectric layers are substantially fully oxided and/or fully oxided.

6. The coated article of claim 1, wherein the coating has a sheet resistance of no greater than 5 ohms/square.

7. The coated article of claim 1, wherein the coated article is heat treated.

8. The coated article of claim 1, wherein the coated article is heat treated and has a glass side reflective Δ

E* value of no greater than 5.0 due to the heat treatment.

9. The coated article of claim 1, wherein the first and second dielectric layers each comprise an oxide of ZnNi.

10. The coated article of claim 1, wherein a metal content of each of the first and second dielectric layers comprises from about 60-98% Zn and from about 0.2-20% Ni (atomic %).

11. The coated article of claim 1, wherein a metal content of each of the first and second dielectric layers comprises from about 85-97% Zn and from about 1-15% Ni (atomic %).

12. The coated article of claim 1, wherein each of the first and second dielectric layers consists essentially of an oxide of ZnNi.

13. The coated article of claim 1, wherein each of the first and second dielectric layers comprises an oxide of ZnCuNi.

14. The coated article of claim 1, wherein each of the first and second dielectric layers consists essentially of an oxide of ZnCuNi.

15. The coated article of claim 1, wherein each of the first and second dielectric layers comprises an oxide of ZnNiAl.

16. The coated article of claim 1, wherein each of the first and second dielectric layers consists essentially of an oxide of ZnNiAl.

17. The coated article of claim 1, wherein each of the first and second dielectric layers comprises an oxide of ZnNiMg.

18. The coated article of claim 1, wherein each of the first and second dielectric layers consists essentially of an oxide of ZnNiMg.

19. The coated article of claim 1, wherein the dielectric stack between the IR reflecting layers does not contain any tin oxide based layer, so that no tin oxide based layer is provided between the first and second IR reflecting layers comprising silver.

20. The coated article of claim 1, wherein said another contact layer comprising zinc oxide.