研究目的
Investigating the green synthesis of ZnO and CuO nanoparticles using Eucalyptus globulus leaves extract and their application in fabricating p-CuO/n-ZnO heterojunction diodes to study their electrical properties.
研究成果
The green synthesized ZnO and CuO nanoparticles exhibited quantum confinement effects and were successfully used to fabricate p-CuO/n-ZnO heterojunction diodes. The diodes showed significant photocurrent under light illumination, indicating potential for photovoltaic applications.
研究不足
The study focuses on the green synthesis and basic electrical properties of p-CuO/n-ZnO heterojunction diodes. The scalability and long-term stability of the fabricated devices under operational conditions were not explored.
1：Experimental Design and Method Selection:
The study involved the green synthesis of ZnO and CuO nanoparticles using Eucalyptus globulus leaves extract, followed by the fabrication of p-CuO/n-ZnO heterojunction diodes.
2：Sample Selection and Data Sources:
Fresh Eucalyptus leaves were collected for the extract. Zinc acetate and cupric acetate were used as precursors for ZnO and CuO nanoparticles, respectively.
3：List of Experimental Equipment and Materials:
X-ray diffraction (XRD) for structural analysis, transmission electron microscope (TEM) for morphological analysis, UV–vis spectrophotometer for optical absorbance studies, and Keithley-6517B semiconductor parameter analyzer for I–V measurements.
4：Experimental Procedures and Operational Workflow:
The synthesis involved hydrothermal reactions, centrifugation, and calcination. The heterojunction diodes were fabricated by spin coating and heat treatment.
5：Data Analysis Methods:
The crystalline size was calculated using the Scherrer equation, and the band gap was determined from Tauc’s plot.
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