Layered transparent conductive electrode structure for an optical filter

Abstract

A layered structure for a variable transmittance optical filter includes a transparent conductive electrode and a substrate layer. The transparent conductive electrode includes a charge injection layer that has one or more of gold, molybdenum, palladium, reduced graphene oxide, amorphous indium gallium zinc oxide (a-IGZO), platinum, nickel, ruthenium, rhodium, asmium, selenium, tellurium, graphene, and carbon nanotubes. The substrate layer includes a transparent substrate and is positioned relative to the transparent conductive electrode such that light passing through the transparent conductive electrode passes through the substrate layer.

1 . A layered structure for a variable transmittance optical filter, comprising:
 a transparent conductive electrode comprising a charge injection layer comprising one or more of gold, molybdenum, palladium, reduced graphene oxide, amorphous indium gallium zinc oxide (a-IGZO), platinum, nickel, ruthenium, rhodium, osmium, selenium, tellurium, graphene, and carbon nanotubes; and   a substrate layer comprising a transparent substrate, wherein the substrate layer is positioned relative to the transparent conductive electrode such that light passing through the transparent conductive electrode passes through the substrate layer,   wherein the transparent conductive electrode further comprises a transparent conductive layer between the charge injection layer and the substrate layer.   
     
     
         2 . The layered structure of  claim 1 , wherein the substrate layer is adjacent the transparent conductive electrode. 
     
     
         3 . The layered structure of  claim 1 , wherein the charge injection layer is adjacent the substrate layer. 
     
     
         4 . The layered structure of  claim 1 , wherein the charge injection layer comprises gold. 
     
     
         5 . The layered structure of  claim 1 , wherein the charge injection layer comprises one or more of: gold, molybdenum, palladium, reduced graphene, and amorphous indium gallium zinc oxide (a-IGZO). 
     
     
         6 . The layered structure of  claim 1 , wherein the charge injection layer is continuous. 
     
     
         7 . The layered structure of  claim 1 , wherein the charge injection layer is discontinuous. 
     
     
         8 . (canceled) 
     
     
         9 . (canceled) 
     
     
         10 . The layered structure of  claim 1 , wherein the transparent conductive layer comprises a lower bulk conductivity than the charge injection layer. 
     
     
         11 . The layered structure of  claim 1 , wherein the transparent conductive layer comprises indium tin oxide. 
     
     
         12 . (canceled) 
     
     
         13 . The layered structure of  claim 1 , wherein the transparent conductive layer comprises a greater through-plane conductivity than the charge injection layer. 
     
     
         14 . The layered structure of  claim 1 , wherein the transparent conductive layer comprises a greater sheet resistance than the charge injection layer. 
     
     
         15 . The layered structure of  claim 1 , wherein the transparent conductive layer is more transparent than the charge injection layer. 
     
     
         16 . The layered structure of  claim 1 , wherein the transparent conductive layer comprises one or more metals or metallic alloys. 
     
     
         17 . The layered structure of  claim 16 , wherein the transparent conductive electrode further comprises a barrier layer separating the transparent conductive layer from the charge injection layer. 
     
     
         18 . The layered structure of  claim 17 , wherein the barrier layer comprises indium tin oxide. 
     
     
         19 . The layered structure of  claim 17 , wherein the charge injection layer comprises gold and the transparent conductive layer comprises silver. 
     
     
         20 .- 26 . (canceled) 
     
     
         27 . A layered structure for a variable transmittance optical filter, comprising:
 a transparent conductive electrode comprising:
 a charge injection layer comprising one or more of gold, molybdenum, palladium, reduced graphene oxide, amorphous indium gallium zinc oxide (a-IGZO), platinum, nickel, ruthenium, rhodium, osmium, selenium, tellurium, graphene, and carbon nanotubes; 
 a transparent conductive layer comprising one or more metals or metallic alloys; and 
 a barrier layer separating the transparent conductive layer from the charge injection layer. 
   
     
     
         28 . The layered structure of  claim 27 , wherein the charge injection layer comprises gold and the transparent conductive layer comprises silver. 
     
     
         29 . The layered structure of  claim 27 , wherein the barrier layer comprises indium tin oxide. 
     
     
         30 . A structure for a variable transmittance optical filter, comprising:
 a transparent conductive electrode comprising a charge injection layer comprising one or more of gold, molybdenum, palladium, reduced graphene oxide, amorphous indium gallium zinc oxide (a-IGZO), platinum, nickel, ruthenium, rhodium, osmium, selenium, tellurium, graphene, and carbon nanotubes,   wherein the charge injection layer is discontinuous.