Table 1 Density, diameter, length and aspect ratio of the grown ZnO rods
Current density (mA/cm2) | Density (cm−2) | Diameter of rods (nm) | Length of rods (nm) | Aspect ratio | |
|---|---|---|---|---|---|
This work | −0.5 | 7.95 × 108 | 170 to 240 | 810 to 1,220 | 5.10 |
−1.0 | 7.11 × 108 | 240 to 360 | 1,120 to 1,990 | 5.40 | |
−1.5 | 1.67 × 108 | 900 to 1,160 | 400 to 840 | 0.55 | |
−2.0 | 4.18 × 107 | 1,470 to 1,940 | 520 to 1,020 | 0.45 | |
[15] | - | 3.00 × 107 | 680 | 1,400 | 2.10 |
[29] | −0.15 | 5.83 × 108 | 370 to 780 | - | - |
−0.1 | 1.84 × 107 | 190 to 450 | 450 to 1,160 | 2.32 | |
−0.5 | 1.37 × 109 | 260 to 480 | 840 to 1,160 | 2.70 | |
[30] | −1.0 | 1.24 × 108 | 660 to 1,000 | 150 to 340 | 0.28 |
−1.5 | 3.42 × 107 | 950 to 1,330 | 200 to 560 | 0.34 | |
−2.0 | 2.32 × 107 | 570 to 2,030 | 1,160 to 2,220 | 1.14 |