Improved Field Emission Characteristics of Large-Area Films of Molybdenum Trioxide Microbelt

Figure 6

The optical images of the site distribution of the MoO₃ microbelts film (0.5cm×0.7cm) taken under different gap fields: (a) 𝐸=5.38 V/𝜇m, (b) 𝐸=5.55 V/𝜇m, (c) 𝐸=5.82 V/𝜇m. (The sample area is indicated by the dashed line.)

(a)

(b)

(c)