Coated article with low-E coating having protective doped silver layer for protecting silver based IR reflecting layer(s), and method of making same

US10480058B2 · kind B2 · utility

Assignee

• Guardian Glass, LLC · US

Inventors

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

Key dates

• Filing date: Mar 6, 2019
• Grant date: Nov 19, 2019
• Expiry date: Mar 6, 2039

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C23C14/185
• WIPO field: Materials, metallurgy
• WIPO sector: Chemistry

Abstract

A coated article includes a low emissivity (low-E) coating supported by a glass substrate. The low-E coating includes at least one silver (Ag) based infrared (IR) reflecting layer(s) that is provided adjacent to and contacting at least one protective metallic or substantially metallic doped silver layer in order to improve chemical durability characteristics of the low-E coating. The silver based IR reflecting layer and adjacent protective doped silver layer are part of a low emissivity (low-E) coating, and may be sandwiched between at least transparent dielectric layers. A barrier layer including Ni and/or Cr may be provided over and directly contacting the protective doped silver layer in order to further improve durability of the low-E coating.