研究目的
Investigating the effects of laser-induced periodic surface structures (LIPSS) on the reflectance and crystallinity of silicon solar cells using a XeCl excimer laser.
研究成果
The formation of LIPSS on silicon solar cells using a XeCl excimer laser at a fluence of 0.5 J/cm2 significantly reduces reflectance while maintaining crystallinity. This method shows potential for improving solar cell efficiency without compromising material quality.
研究不足
The study focuses on the effects of LIPSS on reflectance and crystallinity near the melting threshold fluence. The impact on power conversion efficiency and the scalability of the process for industrial applications are not addressed.
1：Experimental Design and Method Selection:
The study used a XeCl excimer laser to form LIPSS on silicon solar cells, with laser fluence adjusted near the melting threshold. Reflectance and crystallinity were measured post-irradiation.
2：Sample Selection and Data Sources:
Single-crystal silicon solar cells of specific dimensions were used. Reflectance spectra and Raman spectra were measured to evaluate the effects.
3：List of Experimental Equipment and Materials:
XeCl excimer laser, cylindrical lens, X–Y translational stage, spectrometer equipped with an integrating sphere, microscopic Raman spectrometer.
4：Experimental Procedures and Operational Workflow:
Laser pulses were focused onto the solar cell surface, with fluence and number of pulses controlled. Reflectance and Raman spectra were measured post-irradiation.
5：Data Analysis Methods:
Reflectance reduction was calculated, and crystallinity was evaluated based on Raman shift and peak width.
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