Metal nanowire inks for the formation of transparent conductive films with fused networks
Fusing nanowire inks are described that can also comprise a hydrophilic polymer binder, such as a cellulose based binder. The fusing nanowire inks can be deposited onto a substrate surface and dried to drive the fusing process. Transparent conductive films can be formed with desirable properties.
1. A transparent conductive film comprising a substrate and a transparent conductive layer comprising a fused metal nanostructured network and a polymeric polyol wherein the film comprises from about 40 wt % to about 600 wt % polymeric polyol relative to the metal weight, a sheet resistance of no more than about 140 ohms/sq and a haze of no more than about 1.2%.
2. The transparent conductive film of claim 1 wherein the fused metal nanostructured network has a metal loading from about 0.1 mg/m 2 to about 300 mg/m 2 .
3. The transparent conductive film of claim 1 wherein the transparent conductive layer comprises from about 100 wt % to about 450 wt % polymeric polyol relative to metal loading.
4. The transparent conductive film of claim 1 wherein the polymeric polyol comprises a cellulose based polymer.
5. The transparent conductive film of claim 1 having a sheet resistance of no more than about 95 ohms/sq, a % TT of at least about 89%, wherein the metal nanostructured network comprises silver.
6. The transparent conductive film of claim 1 wherein the substrate comprises a polymer substrate supporting the transparent conductive layer.
7. The transparent conductive film of claim 1 wherein the polymeric polyol comprises a chitosan based polymer.
8. The transparent conductive film of claim 1 wherein the fused metal nanostructured network has a metal loading from about 1 mg/m 2 to about 150 mg/m 2 .
9. The transparent conductive film of claim 1 further comprising a polymer overcoat.
10. The transparent conductive film of claim 1 having a sheet resistance of no more than about 100 ohms/sq.