Table 1 The morphological characteristic and field emission property of ZnO nanorod arrays. (r: the average radius;L: the length of nanorod;β: the field enhance factor;s: the spacing of nanorods)
From: Effect of Aspect Ratio on Field Emission Properties of ZnO Nanorod Arrays
Sample | r(nm) | L(μm) | L/r | s(nm) | Turn-on field (V/μm) | Threshold field (V/μm) | β |
|---|---|---|---|---|---|---|---|
A | 90 ± 2 | 2.5 ± 0.05 | 28 | 195 ± 10 | 6.33 | 8.58 | 1103 |
B | 125 ± 5 | 4.2 ± 0.05 | 34 | 183 ± 10 | 5.16 | 7.43 | 1772 |
C | 136 ± 5 | 5.3 ± 0.05 | 39 | 167 ± 10 | 3.83 | 5.65 | 2612 |
D | 150 ± 5 | 6.3 ± 0.1 | 42 | 143 ± 10 | 4.16 | 6.57 | 2382 |
E | 168 ± 5 | 7.4 ± 0.1 | 44 | 126 ± 10 | 4.65 | 6.97 | 1760 |