Coated article with low-E coating having doped silver IR reflecting layer(s)

US10227819B2 · kind B2 · utility

Assignee

• Guardian Glass, LLC · US

Inventors

• Yiwei Lu · Ann Arbor, US
• Brent Boyce · Novi, US
• Guizhen Zhang · Santa Clara, US
• Guowen Ding · San Jose, US
• Daniel Schweigert · Fremont, US
• Scott Jewhurst · Auburn Hills, US
• Daniel Lee · San Jose, US
• Cesar Clavero · San Jose, US
• Minh Huu Le · San Jose, US

Key dates

• Filing date: Feb 24, 2017
• Grant date: Mar 12, 2019
• Expiry date: Feb 24, 2037

Classification

• Technology area (CPC E): Fixed Constructions
• CPC primary: E06B2009/2417
• WIPO field: Materials, metallurgy
• WIPO sector: Chemistry

Abstract

Example embodiments of this invention relate to a coated article having a low-E coating including at least one infrared (IR) reflecting layer of silver that is doped with a material such as SiAl, SiZn, or SiZnCu. The IR reflecting layer(s) is part of a low-E coating, and may be sandwiched between at least transparent dielectric layers. A silver based IR reflecting layer doped in such a manner for example provides for improved corrosion resistance and chemical durability of the layer and the overall coating, and improved stability such as reduced haze upon optional heat treatment (HT), while maintaining good optical properties, compared to an Ag IR reflecting layer that is not doped.