Solar Control Coating with Enhanced Solar Control Performance

Abstract

A solar control coating (30) includes a first phase adjustment layer (40); a first metal functional layer (46); a second phase adjustment layer (50); a second metal functional layer (58); a third phase adjustment layer (62); a third metal functional layer (70); a fourth phase adjustment layer (86); and optionally, a protective layer (92). At least one of the metal functional layers (46, 58, 70) includes a metal functional multi-film layer including (i) at least one infrared reflective film and (ii) at least one absorptive film.

What is claimed is: 
     
         1 . A coated article comprising:
 a substrate; and   a solar control coating over at least a portion of the substrate, wherein the solar control coating comprises:   a first phase adjustment layer;   a first metal functional layer located over the first phase adjustment layer;   a first primer layer over the first metal functional layer;   a second phase adjustment layer located over the first metal functional layer   a second metal functional layer located over the second phase adjustment layer;   a second primer layer over the second metal functional layer;   a third phase adjustment layer located over the second metal functional layer;   a third metal functional layer located over the third phase adjustment layer;   a third primer layer over the third metal functional layer; and   a fourth phase adjustment layer located over the third metal functional layer,   wherein the second metal functional layer comprises an infrared reflective continuous metallic film and at least one absorptive film comprising an alloy of nickel and chromium.   
     
     
         2 . The coated article of  claim 1 , wherein the infrared reflective continuous metallic film of the second metal functional layer comprises silver. 
     
     
         3 . The coated article of  claim 1 , wherein the infrared reflective continuous metallic film of the second metal functional layer comprises silver, and wherein the at least one absorptive film comprising an alloy of nickel and chromium is located over the infrared reflective continuous metallic film. 
     
     
         4 . The coated article of  claim 1 , wherein the first metal functional layer comprises an infrared reflective film. 
     
     
         5 . The coated article of  claim 4 , wherein the infrared reflective film of the first metal functional layer comprises silver. 
     
     
         6 . The coated article of  claim 1 , wherein the first phase adjustment layer has an optical thickness in the range of 40 nm to 100 nm;
 the second phase adjustment layer has an optical thickness in the range of 80 nm to 200 nm;   the third phase adjustment layer has an optical thickness in the range of 90 nm to 200 nm; and   the fourth phase adjustment layer has an optical thickness in the range of 30 nm to 100 nm located over the third metal functional layer.   
     
     
         7 . The coated article of  claim 1 , wherein the solar control coating further comprises a protective layer having optical thickness in the range of 1 nm to 30 nm located over the fourth phase adjustment layer. 
     
     
         8 . The coated article of  claim 1 , wherein:
 the first phase adjustment layer comprises a first film comprising zinc stannate, silicon nitride, or tin oxide and a second film comprising zinc oxide or tin doped zinc oxide located over the first film;   the second phase adjustment layer comprises a first film comprising zinc oxide or tin doped zinc oxide, a second film comprising zinc stannate located over the first film, and a third film comprising zinc oxide or tin doped zinc oxide located over the second film;   the third phase adjustment layer comprises a first film comprising zinc oxide or tin doped zinc oxide, a second film comprising zinc stannate located over the first film, and a third film comprising zinc oxide or tin doped zinc oxide located over the second film; and   the fourth phase adjustment layer comprises a first film comprising zinc oxide or tin doped zinc oxide and a second film comprising zinc stannate located over the first film.   
     
     
         9 . The coated article of  claim 1 , wherein the third metal functional layer comprises an infrared reflective film. 
     
     
         10 . The coated article of  claim 9 , wherein the infrared reflective film of the third metal functional layer comprises silver. 
     
     
         11 . An insulated glass unit comprising:
 a first ply comprising a first surface and a second surface opposing the first surface;   a second ply comprising a third surface and a fourth surface,
 wherein the second ply is spaced from the first ply, and 
 wherein the first ply and second ply are connected together; and 
   a solar control coating over at least a portion of the second or third surface, wherein the solar control coating comprises:   a first phase adjustment layer;   a first metal functional layer located over the first phase adjustment layer;   a first primer layer over the first metal functional layer;   a second phase adjustment layer located over the first metal functional layer a second metal functional layer located over the second phase adjustment layer;   a second primer layer over the second metal functional layer;   a third phase adjustment layer located over the second metal functional layer;   a third metal functional layer located over the third phase adjustment layer;   a third primer layer over the third metal functional layer; and   a fourth phase adjustment layer located over the third metal functional layer,   wherein the second metal functional layer comprises an infrared reflective continuous metallic film and at least one absorptive film comprising an alloy of nickel and chromium.   
     
     
         12 . The insulated glass unit of  claim 11 , wherein the infrared reflective continuous metallic film of the second metal functional layer comprises silver. 
     
     
         13 . The insulated glass unit of  claim 11 , wherein the infrared reflective continuous metallic film of the second metal functional layer comprises silver, and wherein the at least one absorptive film comprising an alloy of nickel and chromium is located over the infrared reflective continuous metallic film. 
     
     
         14 . The insulated glass unit of  claim 11 , wherein the first metal functional layer comprises an infrared reflective film. 
     
     
         15 . The insulated glass unit of  claim 14 , wherein the infrared reflective film of the first metal functional layer comprises silver. 
     
     
         16 . The insulating glass unit of  claim 11 , wherein the first phase adjustment layer has an optical thickness in the range of 40 nm to 100 nm;
 the second phase adjustment layer has an optical thickness in the range of 80 nm to 200 nm;   the third phase adjustment layer has an optical thickness in the range of 90 nm to 200 nm; and   the fourth phase adjustment layer has an optical thickness in the range of 30 nm to 100 nm located over the third metal functional layer.   
     
     
         17 . The insulating glass unit of  claim 11 , wherein the solar control coating further comprises a protective layer having optical thickness in the range of 1 nm to 30 nm located over the fourth phase adjustment layer. 
     
     
         18 . The insulated glass unit of  claim 11 , wherein:
 the first phase adjustment layer comprises a first film comprising zinc stannate, silicon nitride, or tin oxide and a second film comprising zinc oxide or tin doped zinc oxide located over the first film;   the second phase adjustment layer comprises a first film comprising zinc oxide or tin doped zinc oxide, a second film comprising zinc stannate located over the first film, and a third film comprising zinc oxide or tin doped zinc oxide located over the second film;   the third phase adjustment layer comprises a first film comprising zinc oxide or tin doped zinc oxide, a second film comprising zinc stannate located over the first film, and a third film comprising zinc oxide or tin doped zinc oxide located over the second film; and   the fourth phase adjustment layer comprises a first film comprising zinc oxide or tin doped zinc oxide and a second film comprising zinc stannate located over the first film.   
     
     
         19 . The insulated glass unit of  claim 11 , wherein the third metal functional layer comprises an infrared reflective film comprising silver. 
     
     
         20 . A coated article comprising:
 a substrate; and   a solar control coating over at least a portion of the substrate, wherein the solar control coating comprises:   a plurality of phase adjustment layers;   a first metal functional layer comprising an infrared reflective film;   a second metal functional layer comprising an infrared reflective film; and   a third metal functional layer comprising a metal functional multi-film layer,   wherein the second metal functional layer comprises an infrared reflective continuous metallic film and at least one absorptive film comprising an alloy of nickel and chromium.