Disclosed is a glazing unit including an insulating glazing unit that is assembled with at least three panes for use in a window or as a part of a wall in a property, including a first pane that is located closer to the exterior of the property, a second pane located closer to the interior of the property, and a third pane located between the first and the second panes, whereby the first pane is provided on its surface that is facing inwards with a coating that reduces the radiation of heat in the form of an oxide layer burned into the surface of the pane, whereby also the second pane and the third pane are provided with a coating that reduces the radiation of heat in the form of an oxide layer that is burned into the surface of the pane.

A low-E coating has good color stability (a low E* value) upon heat treatment (HT). Thermal stability may be improved by 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; and/or by the provision of at least one dielectric layer of or including an oxide of zirconium. These have the effect of significantly improving the coating's thermal stability (i.e., lowering the E* value). An absorber film may be designed to adjust visible transmission and provide desirable coloration, while maintaining durability and/or thermal stability. The dielectric layer (e.g., of or including an oxide of Zr) may be sputter-deposited so as to have a monoclinic phase in order to improve thermal stability.

The invention provides low-emissivity coatings that are highly reflective of infrared radiation. The coating includes three infrared-reflection film regions, which may each comprise silver.

Low-emissivity coatings that are highly reflective to infrared-radiation. The coating includes three infrared-reflection film regions, which may each include silver.

An ellipsometry system detects and/or identifies significant corrosion on glass, such as on soda-lime-silica based float glass. In certain example embodiments, there is provided a method and/or system using ellipsometry to detect and/or identify significant corrosion on soda-lime-silica based glass, so that such significantly corroded glass can be identified and not coated with a low-E coating and/or not used in applications where optical appearance is important. The ellipsometry system may be part of, or used in connection with, a sputtering apparatus/system for sputter-depositing low-E coatings on glass, so that whether to pass a piece of glass to the sputtering apparatus/system is based on whether significant corrosion is detected on the glass.

A substrate having a coating is disclosed. The coating is formed of a plurality of layers. A base layer of the plurality of layers includes an alloy, and at least two additional layers include silver. A coating for a substrate is also disclosed. A method of coating a substrate is further disclosed.

A low-E coating has good color stability (a low E* value) upon heat treatment (HT). Thermal stability may be improved by 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; and/or by the provision of at least one dielectric layer of or including at least one of: (a) an oxide of silicon and zirconium, (b) an oxide of zirconium, and (c) an oxide of silicon. These have the effect of significantly improving the coating's thermal stability (i.e., lowering the E* value). An absorber film may be designed to adjust visible transmission and provide desirable coloration, while maintaining durability and/or thermal stability.

Coated articles include two or more functional infrared (IR) reflecting layers optionally sandwiched between at least dielectric layers. The dielectric layers may be of or including silicon nitride or the like. At least one of the IR reflecting layers is of or including titanium nitride (e.g., TIN) and at least another of the IR reflecting layers is of or including indium-tin-oxide (ITO).

Certain example embodiments of this invention relate to coated articles having a metamaterial-inclusive layer, coatings having a metamaterial-inclusive layer, and/or methods of making the same. Metamaterial-inclusive coatings may be used, for example, in low-emissivity applications, providing for more true color rendering, low angular color dependence, and/or high light-to-solar gain. The metamaterial material may be a noble metal or other material, and the layer may be made to self-assemble by virtue of surface tensions associated with the noble metal or other material, and the material selected for use as a matrix. An Ag-based metamaterial layer may be provided below a plurality (e.g., 2, 3, or more) continuous and uninterrupted layers comprising Ag in certain example embodiments. In certain example embodiments, barrier layers comprising TiZrOx may be provided between adjacent layers comprising Ag, as a lower-most layer in a low-E coating, and/or as an upper-most layer in a low-E coating.

Certain example embodiments relate to ultra-fast laser treatment of silver-inclusive (low-emissivity) low-E coatings, coated articles including such coatings, and/or associated methods. The low-E coating is formed on a substrate (e.g., borosilicate or soda lime silica glass), with the low-E coating including at least one sputter-deposited silver-based layer, and with each said silver-based layer being sandwiched between one or more dielectric layers. The low-E coating is exposed to laser pulses having a duration of no more than 10.sup.12 seconds, a wavelength of 355-500 nm, and an energy density of more than 30 kW/cm.sup.2. The exposing is performed so as to avoid increasing temperature of the low-E coating to more than 300 degrees C. while also reducing (a) grain boundaries with respect to, and vacancies in, each said silver-based layer, (b) each said silver-based layer's refractive index, and (c) emissivity of the low-E coating compared to its as-deposited form.