Coating for glass wherein the first layer consists of tin oxide and a dopant Sb, W, V, Fe, Cr, Mo, Nb,Co, Ni and a further layer comprising tin oxide and F or P

摘要

A tin oxide coated, solar control glass having low haze of less than about 2.0% and having a NIR solar absorbing layer and a low emissivity layer within the tin oxide coating is disclosed, which comprises a glass substrate and a doped tin oxide coating having at least two layers with one layer being a solar absorbing layer comprising SnO2 containing a dopant selected from the group consisting of antimony, tungsten, vanadium, iron, chromium, molybdenum, niobium, cobalt, nickel and mixtures thereof and another layer being a low emissivity layer comprising SnO2 containing a dopant selected from the group fluorine or phosphorus, wherein a portion of the solar absorbing layer contains fluorine in sufficient quantity to reduced rugosity and low haze for the tin oxide coating, and wherein the thickness of the NIR solar absorbing layer is from 200 to 320 nanometers (nm) and the thickness of the low emissivity layer is from 200 to 450 nm and the portion of the solar absorbing layer imparting reduced rugosity comprises from 300 Angstroms (Å) to 600 Å of the thickness of the solar absorbing layer and is located either adjacent to the interface between the solar absorbing layer and the low emissivity layer, or is the portion of the solar absorbing layer that is closest to the glass substrate.