Coated article having low-E coating with IR reflecting layer(S) and yttrium inclusive high index nitrided dielectric layer

Patent metadata

Field	Value
Publication number	US-10287673-B2
Application number	US-201715451518-A
Country	US
Kind code	B2
Filing date	Mar 7, 2017
Priority date	Mar 7, 2017
Publication date	May 14, 2019
Grant date	May 14, 2019

Abstract

A coated article includes a low emissivity (low-E) coating having at least one infrared (IR) reflecting layer of a material such as silver, gold, or the like, and at least one yttrium (Y) inclusive high index nitrided dielectric layer. In certain example embodiments, the yttrium inclusive high index nitrided dielectric layer(s) may be of or include one or more of YZrSiAlN, YZrSiN, YSiN, and/or YSiAlN. The high index layer may be a transparent dielectric high index layer, with a high refractive index (n) and low k value, in preferred embodiments and may be provided for antireflection purposes and/or visible transmission purposes, and/or for improving thermal stability. In certain example embodiments, the low-E coating may be used in applications such as monolithic or insulating glass (IG) window units, vehicle windows, or the like.

First claim

The invention claimed is:

1. A coated article including a coating supported by a glass substrate, the coating comprising:
a first dielectric layer on the glass substrate;
an infrared (IR) reflecting layer comprising silver on the glass substrate, located over at least the first dielectric layer;
a second dielectric layer on the glass substrate, located over at least the IR reflecting layer; and
wherein at least one of the first and second dielectric layers comprises a nitride of yttrium (Y), contains from 0-10% oxygen (atomic %), has a refractive index (n) of at least 2.21 at 550 nm, and further comprises at least one of Zr, Si, and Al.

2. The coated article of claim 1 , wherein the layer comprising the nitride of Y further comprises Si.

3. The coated article of claim 1 , wherein the layer comprising the nitride of Y further comprises Si and Al.

4. The coated article of claim 1 , wherein the layer comprising the nitride of Y further comprises Zr.

5. The coated article of claim 1 , wherein the layer comprising the nitride of Y further comprises Zr and Si.

6. The coated article of claim 1 , wherein the layer comprising the nitride of Y further comprises Zr, Si and Al.

7. The coated article of claim 1 , wherein the layer comprising the nitride of Y has a refractive index of at least 2.25 (at 550 nm).

8. The coated article of claim 1 , wherein the layer comprising the nitride of Y has an absorption coefficient (k) of no greater than 0.015 (at 400 nm).

9. The coated article of claim 1 , wherein the layer comprising the nitride of Y has an absorption coefficient (k) of no greater than 0.010 (at 400 nm).

10. The coated article of claim 1 , wherein the coated article undergoes a change in refractive index (n), at 550 nm, of no more than 0.04 due to heat treatment at 650° C. heat treatment for 8 minutes.

11. The coated article of claim 1 , wherein the coated article undergoes a change in refractive index (n), at 550 nm, of no more than 0.01 due to heat treatment at 650° C. heat treatment for 8 minutes.

12. The coated article of claim 1 , wherein the layer comprising the nitride of Y contains from 0-5% oxygen (atomic %).

13. The coated article of claim 1 , wherein the layer comprising the nitride of Y contains from 0-2% oxygen (atomic %).

14. The coated article of claim 1 , wherein the coating is a low-E coating and has a normal emissivity (En) of no greater than 0.2.

15. The coated article of claim 1 , wherein the coating is a low-E coating and has a normal emissivity (En) of no greater than 0.10.

16. The coated article of claim 1 , wherein the layer comprising the nitride of Y is amorphous or substantially amorphous.

17. The coated article of claim 1 , wherein the first dielectric layer comprises the nitride of yttrium (Y), contains from 0-10% oxygen (atomic %), has a refractive index (n) of at least 2.21 at 550 nm, has an absorption coefficient k of no greater than 0.02 at 400 nm, and further comprises at least one of Zr, Si, and Al, and is located between at least the glass substrate and the IR reflecting layer.

18. The coated article of claim 1 , wherein the second dielectric layer comprises the nitride of yttrium (Y), contains from 0-10% oxygen (atomic %), has a refractive index (n) of at least 2.21 at 550 nm, has an absorption coefficient k of no greater than 0.02 at 400 nm, and further comprises at least one of Zr, Si, and Al, and is located on the glass substrate over at least the IR reflecting layer.

19. The coated article of claim 18 , wherein the coating further comprises a layer comprising silicon nitride located over and directly contacting the layer comprising the nitride of Y.

20. The coated article of claim 19 , wherein the coating further comprising an overcoat comprising an oxide of Si and Al, and further comprises B, located over and directly contacting the layer comprising silicon nitride.

21. The coated article of claim 1 , wherein the coating further comprises a layer comprising silicon nitride located between at least the glass substrate and the first transparent dielectric layer.

22. The coated article of claim 1 , wherein the coating further comprises a layer comprising zinc oxide located under and directly contacting the IR reflecting layer.

23. The coated article of claim 1 , wherein the coating further comprises a layer comprising an oxide of Ni and/or Cr located over and directly contacting the IR reflecting layer.

24. The coated article of claim 1 , wherein the coated article is thermally tempered.

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

26. The coated article of claim 1 , wherein the layer comprising the nitride of Y has a metal content comprising from 25-65% Y (atomic %).

27. The coated article of claim 1 , wherein the layer comprising the nitride of Y has a metal content comprising from 30-50% Y (atomic %).

28. The coated article of claim 1 , wherein the layer comprising the nitride of Y has a metal content comprising from 33-45% Y (atomic %).

29. The coated article of claim 1 , wherein the layer comprising the nitride of Y has a metal content comprising from 25-65% Y, from 1-30% Zr, from 30-80% Si, and from 0-30% Al (atomic %).

30. The coated article of claim 1 , wherein the layer comprising the nitride of Y contains more Si than Y (atomic %).

31. The coated article of claim 1 , wherein the layer comprising the nitride of Y is substantially free of Ti and Nb.

32. The coated article of claim 1 , wherein the layer comprising the nitride of Y contains from 0-5% Ti and from 0-5% Nb (atomic %).

33. A coated article including a coating supported by a glass substrate, the coating comprising:
a first dielectric layer on the glass substrate;
an infrared (IR) reflecting layer on the glass substrate, located over at least the first dielectric layer;
a second dielectric layer on the glass substrate, located over at least the IR reflecting layer;
a third dielectric layer on the glass substrate and located over at least the first and second dielectric layers; and
wherein at least one of the first and second dielectric layers comprises a nitride of yttrium (Y), and further comprises at least one of Zr, Si, and Al.

34. The coated article of claim 33 , wherein the third dielectric layer comprises silicon nitride.

35. The coated article of claim 33 , wherein the layer comprising the nitride of Y further comprises Si.

36. The coated article of claim 33 , wherein the layer comprising the nitride of Y further comprises Si and Al.

37. The coated article of claim 33 , wherein the layer comprising the nitride of Y further comprises Zr.

38. The coated article of claim 33 , wherein the layer comprising the nitride of Y further comprises Zr and Si.

39. The coated article of claim 33 , wherein the layer comprising the nitride of Y further comprises Zr, Si and Al.

40. The coated article of claim 33 , wherein the layer comprising the nitride of Y has a refractive index of at least 2.21 (at 550 nm).

41. The coated article of claim 33 , wherein the layer comprising the nitride of Y has a metal content comprising from 25-65% Y (atomic

Assignees

• Guardian Glass Llc

Inventors

• Clavero Cesar
• Ding Guowen
• Lee Daniel
• Jewhurst Scott
• Schweigert Daniel
• Saraf Gaurav
• Zhang Guizhen
• Le Minh
• Frank Marcus
• Murphy Nestor P

Classifications

• C23C14/0652

  Silicon nitride · CPC title

• C23C14/086

  of zinc, germanium, cadmium, indium, tin, thallium or bismuth · CPC title

• C03C17/3652

  the coating stack containing at least one sacrificial layer to protect the metal from oxidation · CPC title

• C03C17/3681

  the multilayer coating being used in glazing, e.g. windows or windscreens · CPC title

• C23C14/35

  by application of a magnetic field, e.g. magnetron sputtering {(C23C14/3457 takes precedence)} · CPC title