研究目的
Investigating the effect of laser ablation on the structural, morphological, and optical characterization of Tin NPs (Sn Nanoparticles) thin films in methanol.
研究成果
Tin NPs thin films prepared by laser ablation in methanol exhibit polycrystalline structure with preferred growth orientation, good optical transmittance, and an optical energy gap of 1.4 eV. The films have potential applications in photovoltaic cells and smart windows due to their optical properties.
研究不足
The study is limited to the characterization of Tin NPs thin films prepared by laser ablation in methanol, focusing on structural, morphological, and optical properties. The effects of varying laser parameters beyond the specified range were not explored.
1：Experimental Design and Method Selection:
Tin NPs films were prepared on glass substrate by a laser ablation technique under ambient atmosphere. The experimental setup involved pressing a Tin NPs pellet and irradiating it with pulsed Nd:YAG laser in methanol.
2：Sample Selection and Data Sources:
Tin NPs pressed pellet from Fluke manufacture was used, and the colloidal solutions were synthesized by irradiating the pellet with laser.
3：List of Experimental Equipment and Materials:
Nd:YAG laser (type HUAFEI), X-ray diffract meter system (XRD-6000), atomic force microscopy (AFM, CSPM AA3000), UV-VIS spectrophotometer (SHIMADZU UV-1600/1700 series), and SEM.
4：Experimental Procedures and Operational Workflow:
The laser fluence was fixed at 2.92 J/cm2 with an ablation time of 5 min. The films were then characterized using XRD, AFM, SEM, and optical measurements.
5：92 J/cm2 with an ablation time of 5 min. The films were then characterized using XRD, AFM, SEM, and optical measurements.
Data Analysis Methods:
5. Data Analysis Methods: The crystallite size was calculated using Scherrer formula, and optical properties were analyzed from transmittance and absorbance spectra.
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