研究目的
To investigate the structural and optical properties of zinc oxide thin films deposited by chemical spray pyrolysis technique with varying precursor concentrations.
研究成果
Zinc oxide thin films deposited by chemical spray pyrolysis technique show polycrystalline nature with hexagonal structure and c-axis orientation. The films exhibit high transmittance in the visible region and a direct band gap in the range of 2.9 to 3.2 eV. Photoluminescence spectra show a strong blue emission band around 495 nm at room temperature.
研究不足
The study is limited to the structural and optical properties of zinc oxide thin films prepared by chemical spray pyrolysis technique. The effect of other deposition parameters and their optimization is not explored.
1：Experimental Design and Method Selection:
Zinc oxide thin films were deposited on microscopic glass substrates using chemical spray pyrolysis technique at various precursor concentrations (0.1, 0.15, 0.2, and 0.3 M). The films were characterized structurally and optically using XRD, UV-Vis spectroscopy, and photoluminescence analysis.
2：1, 15, 2, and 3 M). The films were characterized structurally and optically using XRD, UV-Vis spectroscopy, and photoluminescence analysis.
Sample Selection and Data Sources:
2. Sample Selection and Data Sources: Microscopic glass substrates (Thickness
3：35 mm) were used. A solution of zinc acetate dihydrate in a mixture of deposited water and isopropyl alcohol (
3) volume ratio was prepared.
4：List of Experimental Equipment and Materials:
XPERT-PRO’ X-Ray diffractometer, SHIMADZU - 1800 Double beam Spectrophotometer, VARAIN CARRY ECLIPSE Spectrophotometer, stylus profilometer.
5：Experimental Procedures and Operational Workflow:
The films were deposited at a constant temperature of 380°C with a solution flow rate of 4±0.5 ml/min. Compressed air was used as the carrier gas at a pressure of 0.7 Kg/cm
6：5 ml/min. Compressed air was used as the carrier gas at a pressure of 7 Kg/cmData Analysis Methods:
2.
5. Data Analysis Methods: The structure of the films was examined using XRD. The optical transmission spectroscopic measurements were carried out at room temperature. Photoluminescence spectra were recorded using a xenon lamp.
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