Research Article

Influence of pH, Precursor Concentration, Growth Time, and Temperature on the Morphology of ZnO Nanostructures Grown by the Hydrothermal Method

Figure 6

Cross-sectional SEM images of ZnO NRs on Si substrate at different growth times: (a) 1 hr; (b) 3 hrs; (c) 6 hrs; (d) 10 hrs at T = 90°C. The inset shows the corresponding top view of the SEM images.
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