[특허]Method of making coated article with IR reflecting layer(s) using krypton gas

Method of making coated article with IR reflecting layer(s) using krypton gas 원문보기

IPC분류정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	C23C-014/35
출원번호	US-0036187 (2005-01-18)
등록번호	US-7291251 (2007-11-06)
발명자 / 주소	Butz,Jochen Kriltz,Uwe Bobrowski,Sebastian
출원인 / 주소	Centre Luxembourgeois de Recherches pour le Verre et la Ceramique S.A. (C.R.V.C.)
대리인 / 주소	Nixon & Vanderhye P.C.
인용정보	피인용 횟수 : 0 인용 특허 : 30

초록 ▼

A method of making a coated article is provided, where the coated article may be used in a window or the like and may have at least one infrared (IR) reflecting layer in a low-E coating. The IR reflecting layer may be of silver or the like. In certain example embodiments, at least krypton (Kr) gas is used in sputter-depositing a silver inclusive IR reflecting layer. It has been found that the use of Kr gas in sputtering Ag targets results in an IR reflecting layer having improved resistance and emittance properties.

대표청구항 ▼

The invention claimed is: 1. A method of making a coated article for use in a window unit, the method comprising: providing a glass substrate for supporting a multi-layer coating; depositing an infrared (IR) reflecting layer comprising silver on the glass substrate, wherein said depositing of the IR reflecting layer comprises sputtering at least one target comprising silver that is located in a chamber; providing at least krypton gas in the chamber during said sputtering of the target comprising silver; and wherein a mixture of krypton and at least another inert gas are provided in the chamber during sputtering of the target comprising silver, and wherein from about 55-85% of total gas flow in the chamber during sputtering of the target comprising silver is made up of krypton gas, and wherein substantially a remainder of the total gas flow includes another gas which is the at least another inert gas. 2. The method of claim 1, wherein the another inert gas comprises argon gas. 3. The method of claim 1, wherein the IR reflecting layer comprising silver has a specific resistance (SR) of less than or equal to about 4.0 micro-ohms.cm. 4. The method of claim 1, wherein the IR reflecting layer comprising silver has a specific resistance (SR) of less than or equal to about 3.8 micro-ohms.cm. 5. The method of claim 1, wherein the IR reflecting layer comprising silver has a specific resistance (SR) of less than or equal to about 3.7 micro-ohms.cm. 6. The method of claim 1, wherein the use of krypton gas in depositing the IR reflecting layer causes a specific resistance of the IR reflecting layer to drop at least 5% compared to if no krypton gas was used during said depositing. 7. The method of claim 1, wherein the use of krypton gas in depositing the IR reflecting layer causes a specific resistance of the IR reflecting layer to drop at least 10% compared to if no krypton gas was used during said depositing. 8. The method of claim 1, wherein the use of krypton gas in depositing the IR reflecting layer causes a specific resistance of the IR reflecting layer to drop at least 14% compared to if no krypton gas was used during said depositing. 9. The method of claim 1, wherein the coated article has a visible transmission of at least 40%, and wherein the coating has a sheet resistance (Rs) of no greater than 5.0 ohms/square. 10. The method of claim 1, wherein the coated article has a visible transmission of at least 70%, and wherein the coating has a sheet resistance (Rs) of no greater than 4.0 ohms/square. 11. The method of claim 1, further comprising forming: at least one dielectric layer located between the glass substrate and the IR reflecting layer; a layer comprising an oxide of Ni and/or Cr located over and directly contacting the IR reflecting layer comprising silver; a layer comprising titanium oxide located over and directly contacting the layer comprising the oxide of Ni and/or Cr; a layer comprising a metal oxide located over and directly contacting the layer comprising titanium oxide; and a layer comprising silicon nitride located over the layer comprising the metal oxide. 12. The method of claim 1, further comprising forming a layer comprising zinc oxide, and wherein the IR reflecting layer is located over and directly contacts the layer comprising zinc oxide. 13. The method of claim 1, further comprising coupling the glass substrate with the coating thereon to another substrate in order to form an insulating glass (IG) window unit, and wherein the IG window unit has a U-value of no greater than 1.15 W/(m2K). 14. The method of claim 1, wherein the coated article has an a* value of from-2.5 to +1, and a b* value of from-1 to +4. 15. A method of making a coated article including a layer comprising silver, the method comprising: sputtering at least one target comprising silver that is located in a chamber; providing at least krypton gas in the chamber during said sputtering of the target comprising silver; and wherein a mixture of krypton and at least another inert gas are provided in the chamber during sputtering of the target comprising silver, and wherein from about 55-85% of total gas in the chamber during sputtering of the target comprising silver is made up of krypton gas, and wherein substantially a remainder of the total gas flow includes another gas which is the at least another inert gas. 16. The method of claim 15, wherein the another inert gas comprises argon gas.

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Method of making coated article with IR reflecting layer(s) using krypton gas 원문보기

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