研究目的
Investigating the effect of morphological modification on optical properties and polarization of ZnO nanorods by introducing different annealing temperatures.
研究成果
The study successfully modified the structure and morphology of ZnO NR by annealing, leading to enhanced optical absorption and polarization. The presence of high ZnI and VO concentrations changed the band gap and promoted the increase of optical absorption and polarization, respectively. These findings are essential for designing ZnO NR-based multitype energy nanogenerators.
研究不足
The study focuses on the effect of annealing temperature on ZnO NR properties, but other factors such as pressure and doping concentration were not explored. The application in nanogenerator devices is suggested but not demonstrated.
1：Experimental Design and Method Selection:
The study involved the synthesis of vertically aligned ZnO NR on ITO-coated glass substrate using a seed layer on hydrothermal method. The seed layer was prepared from a mixture of zinc acetate dihydrate and ethanol. The hydrothermal process was maintained at a temperature of 90°C for 4 hrs. Morphological modification was performed by introducing different annealing temperatures.
2：Sample Selection and Data Sources:
Samples included as-grown ZnO NR (ag-ZnO) and annealed ZnO NR at temperatures of 400°C and 500°C for 15 min.
3：List of Experimental Equipment and Materials:
- Scanning electron microscopy (SEM) FEI: INSPECT S50 for morphological analysis.
4：Experimental Procedures and Operational Workflow:
- Preparation of seed layer using spin coating method.
5：Data Analysis Methods:
- Rietveld refinement for lattice parameter determination.
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