Table 1 The UV emission spectra of a single ZnO microstructure and length and diameters of top end and bottom of the ZnO microstructure at different cooling times
Product (h) | PL peak1 (eV) | PL peak2 (eV) | Intensity ratio (peak2/peak1) | Length (μm) | Top-end diameter (μm) | Bottom diameter (μm) |
|---|---|---|---|---|---|---|
1 | 3.22 | 3.29 | 0.216 | 8.89 | 0.80 | 1.23 |
2 | 3.20 | 3.32 | 0.331 | 8.63 | 0.86 | 1.23 |
3 | 3.20 | 3.32 | 0.251 | 7.25 | 0.90 | 1.22 |
4 | 3.20 | 3.32 | 0.364 | 7.00 | 0.91 | 1.23 |
5 | 3.20 | 3.32 | 0.187 | 6.69 | 0.92 | 1.23 |
6 | 3.21 | 3.30 | 0.490 | 6.49 | 0.93 | 1.12 |