研究目的
Characterization of the crystal structure of a thin layer of ZnO synthesized by sol-gel method and spin coating deposited on a glass substrate, focusing on the effects of sol concentration and deposition temperature on optical properties and crystal structure.
研究成果
The study concluded that increasing the concentration of ZnO thin layers decreases transmittance and increases absorption, while increasing deposition temperature increases transmittance and decreases absorption. The smallest band gap energy was observed at the highest concentration and temperature. XRD analysis confirmed the crystal orientation and grain size, and SEM images showed rod-like surface morphology.
研究不足
The study is limited to the characterization of ZnO thin layers with specific sol concentrations and deposition temperatures. The effects of other parameters like spin coating speed and aging time were not explored.
1：Experimental Design and Method Selection:
The study used sol-gel method and spin coating for synthesizing ZnO thin layers on glass substrates. The samples were prepared with three sol concentrations (0.1, 0.3, 0.5 Molar) and two deposition temperatures (350 °C, 550 °C).
2：1, 3, 5 Molar) and two deposition temperatures (350 °C, 550 °C).
Sample Selection and Data Sources:
2. Sample Selection and Data Sources: Glass slides were used as substrates, cleaned and prepared before coating. The sol-gel was prepared using zinc acetate dehydrate, ethanol, and MEA.
3：List of Experimental Equipment and Materials:
UV-Vis spectrophotometer for optical properties, X-ray diffraction (XRD) for crystal structure analysis, and Scanning Electron Microscopy (SEM) for surface morphology.
4：Experimental Procedures and Operational Workflow:
The sol-gel was applied to the substrate via spin coating, followed by drying and heating processes at different temperatures to form ZnO layers.
5：Data Analysis Methods:
Optical properties were analyzed using UV-Vis spectrophotometry, crystal structure was analyzed using XRD, and surface morphology was examined using SEM.
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