研究目的
To synthesize and deposit Ag nanoparticles on silicon substrates by combining pulsed laser ablation in liquid (PLAL) and electrophoretic deposition (ED) techniques, and to study their properties for potential applications in enhancing solar cell efficiency, photocatalysis, and surface-enhanced Raman scattering spectroscopy (SERS).
研究成果
The combined PLAL and ED technique successfully produced uniform Ag nanoparticle films on Si substrates with potential applications in photovoltaic devices, photocatalysis, and SERS. The films exhibited homogenous morphology and clear LSPR around 400 nm.
研究不足
The size and shape control of nanoparticles is challenging with physical techniques like PLAL. The presence of an electric field may influence the shape of nanoparticles, leading to non-spherical morphologies.
1：Experimental Design and Method Selection
Combined PLAL and ED techniques for one-step synthesis and deposition of Ag nanoparticles on Si substrates.
2：Sample Selection and Data Sources
Ag plates of 99.99% purity were used as targets for laser ablation in distilled water. Si substrates were used as negative electrodes.
3：List of Experimental Equipment and Materials
Pulsed diode-pumped Nd:YVO4 laser, JSM-6700 field emission scanning electron microscope, JEOL JEM-2010 FEG transmission electron microscope, Hewlett Packard HP 8452 spectrophotometer.
4：Experimental Procedures and Operational Workflow
Ag targets were ablated in water under an electric field of 15 V. Nanoparticles were characterized by SEM, TEM, HRTEM, EDS, and UV-Vis spectrophotometry.
5：Data Analysis Methods
Analysis of nanoparticle size, shape, crystalline structure, and optical properties using SEM, TEM, HRTEM, EDS, and UV-Vis spectrophotometry.
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