Field Emission Properties of the Graphene Double-Walled Carbon Nanotube Hybrid Films Prepared by Vacuum Filtration and Screen Printing

Figure 5

The luminance uniformity of (a) SPGC-0, (b) VFGC-0, (c) SPGC-20, and (d) VFGC-20.

(a)

(b)

(c)

(d)