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Variation of the length, diameter, structural parameters and optical band gaps of the grown ZnO nanorods at different temperatures.
| Growth Temperature (°C) | Average length of the nanorods (nm) | Average diameter of the nanorods (nm) | Crystalline size (nm) | Strain, ε (%) x 10−3 | Stress, σ (GPa) | Optical band gap (eV) |
|---|---|---|---|---|---|---|
| 60 | 400 ± 26 | 129 ± 17 | 61.3 | 1.465 | -0.341 | 3.30 |
| 70 | 657 ± 50 | 135 ± 20 | 65.3 | 1.542 | -0.359 | 3.29 |
| 80 | 671 ± 51 | 135 ± 20 | 65.5 | 1.573 | -0.366 | 3.29 |
| 90 | 700 ± 64 | 143 ± 25 | 67.5 | 1.615 | -0.376 | 3.29 |
