Light stability of nanowire-based transparent conductors

An optical stack comprising:

• a first substrate;
• a nanowire layer overlying the first substrate and including a plurality of silver nanowires;
• an optically clear adhesive layer overlying the nanowire layer;
• a second glass substrate overlying the optically clear adhesive layer, wherein the nanowire layer is located between the first substrate and the second glass substrate;
• and
• a light stabilizer acting as a catalyst to accelerate a reaction of oxygen with organic materials present in the optical stack, wherein:
• the light stabilizer comprises FeSO4,
• the light stabilizer is incorporated in the nanowire layer,
• the nanowire layer comprises acetic acid, and
• a material of the light stabilizer is selected to at least one of:
• thermally degrade such that at least a portion of the optical stack has a first resistance prior to exposure to heat and has a second resistance after exposure to the heat, or
• degrade upon exposure to UV light such that at least a portion of the optical stack has a first resistance prior to exposure to the UV light and has a second resistance after exposure to the UV light.