Coated article including noble metal and polymeric hydrogenated diamond like carbon composite material having antibacterial and photocatalytic properties, and/or methods of making the same

Patent metadata

Field	Value
Publication number	US-10611679-B2
Application number	US-201715794462-A
Country	US
Kind code	B2
Filing date	Oct 26, 2017
Priority date	Oct 26, 2017
Publication date	Apr 7, 2020
Grant date	Apr 7, 2020

Abstract

Certain example embodiments of this invention relate to coated articles including noble metal (e.g., Ag) and polymeric hydrogenated diamond like carbon (DLC) (e.g., a-C:H, a-C:H:O) composite material having antibacterial and photocatalytic properties, and/or methods of making the same. A glass substrate supports a buffer layer, a matrix comprising the noble metal and DLC, a proton-conducting layer that may comprising zirconium oxide in certain example embodiments, and a layer comprising titanium oxide. The layer comprising titanium oxide may be photocatalytic and optionally may further include carbon and/or nitrogen. The proton-conducting layer may facilitate the creation of electron-hole pairs and, in turn, promote the antibacterial properties of the coated article. The morphology of the layer comprising titanium oxide and/or channels formed therein may enable Ag ions produced from matrix to migrate therethrough.

First claim

What is claimed is:

1. A coated article, comprising:
a glass substrate;
a matrix comprising diamond-like carbon (DLC) and silver formed, directly or indirectly, on the glass substrate; and
a layer comprising titanium oxide formed, directly or indirectly, on the matrix,
wherein the matrix is structured to enable silver ions produced from the silver therein to migrate towards the layer comprising titanium oxide, and wherein the layer comprising titanium oxide is structured to enable the silver ions migrating from the matrix to pass therethrough.

2. The coated article of claim 1 , wherein the matrix comprises a-C:H.

3. The coated article of claim 1 , wherein the matrix comprises a-C:H:O.

4. The coated article of claim 1 , wherein the DLC in the matrix comprises at last 30 at. % H and/or the matrix comprises 5-35% Ag.

5. The coated article of claim 1 , wherein the layer comprising titanium oxide is at least partially polycrystalline.

6. The coated article of claim 1 , wherein the layer comprising titanium oxide has a substantially anatase phase and is photocatalytic.

7. The coated article of claim 1 , wherein the layer comprising titanium oxide further comprises C and/or N.

8. The coated article of claim 1 , further comprising a plurality of channels formed in the layer comprising titanium oxide, the channels facilitating migration of the silver ions from the matrix through the layer comprising titanium oxide.

9. The coated article of claim 1 , further comprising a proton-conducting thin film layer located between the matrix and the layer comprising titanium oxide.

10. The coated article of claim 9 , wherein the proton-conducting thin film layer comprises zirconium oxide.

11. The coated article of claim 10 , wherein the proton-conducting thin film layer further comprises C and/or N.

12. The coated article of claim 10 , further comprising a buffer layer located between the matrix and the glass substrate.

13. The coated article of claim 12 , wherein the buffer layer comprises silicon oxide, silicon nitride, and/or silicon oxynitride.

14. The coated article of claim 12 , wherein the buffer layer comprises titanium oxide.

15. A coated article, comprising:
a glass substrate;
a buffer layer formed, directly or indirectly, on the glass substrate;
a matrix comprising diamond-like carbon (DLC) and silver formed, directly or indirectly, on the buffer layer; and
an overcoat layer comprising zirconium oxide formed, directly or indirectly, on the matrix,
wherein the matrix is structured to enable silver ions produced from the silver therein to migrate towards the layer comprising zirconium oxide, and wherein the layer comprising zirconium oxide is structured to enable the silver ions migrating from the matrix to pass therethrough.

16. The coated article of claim 15 , wherein the buffer layer and/or the layer comprising zirconium oxide is/are doped with C.

17. The coated article of claim 15 , wherein the buffer layer is doped with C and the layer comprising zirconium oxide comprises C and N.

18. The coated article of claim 15 , wherein the matrix comprises a-C:H:O.

19. The coated article of claim 15 , further comprising a plurality of channels formed in the layer comprising zirconium oxide, the channels facilitating migration of the silver ions from the matrix through the layer comprising zirconium oxide.

20. A method of making a coated article having antibacterial properties, the method comprising:
forming directly or indirectly on a glass substrate a matrix comprising diamond-like carbon (DLC) and silver; and
forming a layer comprising titanium oxide, directly or indirectly, on the matrix,
wherein the matrix is structured to enable silver ions produced from the silver therein to migrate towards the layer comprising titanium oxide, and wherein the layer comprising titanium oxide is structured to enable the silver ions migrating from the matrix to pass therethrough.

21. The method of claim 20 , wherein the layer comprising titanium oxide has a substantially anatase phase and is photocatalytic.

22. The method of claim 20 , wherein the layer comprising titanium oxide further comprises C and/or N.

23. The method of claim 20 , further comprising forming a plurality of channels in the layer comprising titanium oxide, the channels facilitating migration of the silver ions from the matrix through the layer comprising titanium oxide.

24. The method of claim 20 , further comprising forming a proton-conducting thin film layer comprising zirconium oxide, the proton-conducting thin film layer being located between the matrix and the layer comprising titanium oxide.

25. A method of making a coated article having antibacterial properties, the method comprising:
forming, directly or indirectly on a glass substrate, a buffer layer;
forming a matrix comprising diamond-like carbon (DLC) and silver, directly or indirectly on the buffer layer; and
forming an overcoat layer comprising zirconium oxide directly or indirectly, on the matrix,
wherein the matrix is structured to enable silver ions produced from the silver therein to migrate towards the layer comprising zirconium oxide, and wherein the layer comprising zirconium oxide is structured to enable the silver ions migrating from the matrix to pass therethrough, and
wherein the buffer layer is doped with C and the layer comprising zirconium oxide comprises C and N.

Assignees

• Guardian Glass Llc

Inventors

• Veerasamy Vijayen S

Classifications

• C03C2217/28

  Other inorganic materials · CPC title

• C03C2217/948

  Layers comprising indium tin oxide [ITO] · CPC title

• C03C17/3644

  the metal being silver · CPC title

• C03C17/3441

  comprising carbon, a carbide or oxycarbide · CPC title

• C03C2218/355

  Temporary coating · CPC title