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<p>With the rapid development of the photovoltaic industry, the disposal and recycling of end-of-life photovoltaic modules have become an increasingly urgent global environmental issue. Laser cleaning is an effective and environmentally friendly technique for the recycling and reuse of silicon wafers (Si-wafers). Traditional physical and chemical cleaning methods suffer from low efficiency and tend to damage the substrate. In this paper, a multi-physics field coupling simulation model for laser cleaning of the Tedlar–PET–Tedlar (TPT) adhesive film on solar cell panels is established to simulate the laser cleaning process under different laser parameters and analyze the influence of laser action time on the temperature variation of the material. On this basis, experimental research on laser cleaning of TPT adhesive is carried for verifying the simulated findings, and an evaluation system for cleaning effect is established for quantitative assessment. On the basis of the comprehensive experimental results, the laser parameters for removing the TPT adhesive without damaging the substrate are determined as follows: laser power of 70 W, pulse width of 10&#xa0;ns, repetition frequency of 30&#xa0;kHz, spot radius of 80&#xa0;μm, and scanning speed of 2400&#xa0;mm/s. The research results provide reliable theoretical support and practical process guidance for the efficient and nondestructive recycling of waste photovoltaic modules. The proposed method exhibits broad prospects in the resource utilization of end-of-life solar panels.</p>

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Simulation Optimization and Experimental Study on Laser Cleaning of TPT Adhesive from Solar Panels

  • 期刊论文

  • 发表日期：

    2026年4月6日

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  • Qianqian Yang,
  • Wei Zhang,
  • Ning Han,
  • Dongge Li

摘要

With the rapid development of the photovoltaic industry, the disposal and recycling of end-of-life photovoltaic modules have become an increasingly urgent global environmental issue. Laser cleaning is an effective and environmentally friendly technique for the recycling and reuse of silicon wafers (Si-wafers). Traditional physical and chemical cleaning methods suffer from low efficiency and tend to damage the substrate. In this paper, a multi-physics field coupling simulation model for laser cleaning of the Tedlar–PET–Tedlar (TPT) adhesive film on solar cell panels is established to simulate the laser cleaning process under different laser parameters and analyze the influence of laser action time on the temperature variation of the material. On this basis, experimental research on laser cleaning of TPT adhesive is carried for verifying the simulated findings, and an evaluation system for cleaning effect is established for quantitative assessment. On the basis of the comprehensive experimental results, the laser parameters for removing the TPT adhesive without damaging the substrate are determined as follows: laser power of 70 W, pulse width of 10 ns, repetition frequency of 30 kHz, spot radius of 80 μm, and scanning speed of 2400 mm/s. The research results provide reliable theoretical support and practical process guidance for the efficient and nondestructive recycling of waste photovoltaic modules. The proposed method exhibits broad prospects in the resource utilization of end-of-life solar panels.