Low-E matchable coated articles having doped seed layer under silver, and corresponding methods

US10301215B1 · kind B1 · utility

Assignee

• Guardian Glass, LLC · US

Inventors

• Yongli Xu · Plymouth, US
• Brent Boyce · Novi, US
• Salah Boussaad · Auburn Hills, US
• Philip J. Lingle · Temperance, US
• Jingyu Lao · Saline, US
• Richard Vernhes · Auburn Hills, US

Key dates

• Filing date: Jul 16, 2018
• Grant date: May 28, 2019
• Expiry date: Jul 16, 2038

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C03C2218/156
• WIPO field: Materials, metallurgy
• WIPO sector: Chemistry

Abstract

A low-E coating has good color stability (a low ΔE* value) upon heat treatment (HT). The provision of an as-deposited crystalline or substantially crystalline layer of or including zinc oxide, doped with at least one dopant (e.g., Sn), immediately under an infrared (IR) reflecting layer of or including silver in a low-E coating has effect of significantly improving the coating's thermal stability (i.e., lowering the ΔE* value). One or more such crystalline, or substantially crystalline, layers may be provided under one or more corresponding IR reflecting layers comprising silver.