Table 1 Comparative field emission characteristics of sample A, sample B, sample C and sample D coated over carbon paper
From: Effect of Purity and Substrate on Field Emission Properties of Multi-walled Carbon Nanotubes
Sample | βL | βH | Turn-on (10 μA/cm2) field(V/μm) | Threshold field at 0.2 mA/cm2(V/μm) |
|---|---|---|---|---|
A | 548 | 3,995 | 3.51 | 4.38 |
B | 322 | 6,066 | 4.01 | 4.94 |
C | 1,389 | 15,881 | 2.3 | 2.85 |
D | 1,199 | 12,266 | 2.59 | 3.15 |