银价狂飙下的产业突围：降银已成光伏企业必答题

Core Viewpoint - The silver price has surged significantly, impacting the photovoltaic (PV) industry, which relies heavily on silver for conductive paste, leading to a pressing need for alternatives and innovations in production methods [1][2][12] Group 1: Silver Price Impact - COMEX silver price reached $58 per ounce at the beginning of December 2025, nearly doubling within the year and increasing over 140% compared to early 2024 [1] - Silver paste has become the largest single material in photovoltaic modules, replacing silicon materials, which poses a risk of being "choked" by Japanese companies that monopolize high-end silver powder [1] Group 2: Challenges in Silver Reduction - Current alternatives like copper and aluminum are significantly cheaper than silver, with copper being the most viable substitute due to its conductivity [2] - Various silver reduction techniques are being explored, including silver-coated copper, which retains some silver's conductivity while reducing its usage [2] - Reducing silver content in paste can lead to decreased conductivity, and finer printing of grid lines increases resistance, creating a dilemma between reducing silver and maintaining efficiency [2] Group 3: Aiko's Copper Plating Solution - Aiko has pioneered a "silver-free" copper plating technology, positioning itself as a leader in sustainable development within the industry [3][12] - The copper plating process has achieved lower material costs, dropping below 0.05 yuan/W, and eliminates the need for rare materials or precious metals [6] - Aiko's technology has demonstrated efficiency improvements, with copper's lower resistance contributing to better performance compared to traditional silver paste [3][6] Group 4: Technical Barriers and Innovations - The transition to silver-free technology involves overcoming significant technical challenges, including copper's risk of electrical migration and oxidation [7][9] - Aiko has developed protective layers and advanced techniques to ensure the stability of copper components over a 25-year lifespan [9] - High-precision techniques are essential for the successful application of copper plating, ensuring accurate metal distribution on the back of solar cells [9] Group 5: Long-term Strategic Development - Aiko's advancements in silver-free technology are the result of a long-term strategic focus, beginning in 2016 with a commitment to N-type ABC cells [10][11] - The company has successfully scaled production, with a 6.5GW capacity for silver-free ABC cells established in 2022, showcasing effective technology commercialization [10] - By 2025, Aiko's copper plating technology has become a core competitive advantage, enabling the company to achieve profitability amidst industry challenges [11] Group 6: Industry Transformation - Aiko's innovations represent a significant shift in the photovoltaic industry, addressing both immediate cost challenges and long-term sustainability [12] - The integration of silver-free technology with emerging methods like photon multiplication and perovskite layering is expected to lead the industry towards higher efficiency and quality [12]