Developing a sustainable raw materialRaw materials supply chain is crucial for establishing an industrial ecosystem aligned with the goals of the European Green Deal, emphasizing energy conservation, and reducing environmental impactsEnvironmental impact in metal production, especially critical metals. However, the recyclingRecycling rate of strategic and precious metals remains low due to the complex mixture of metals in end-of-life (EoL) products, posing extraction challenges. According to the WEEE Directive (2012/19/EU), photovoltaicPhotovoltaics (PV) panels are categorized as Waste Electrical and Electronic Equipment (WEEE), requiring at least 85% collection and a minimum of 80% recyclingRecycling. RecyclingRecycling materials from solar panels are vital for achieving circular economyCircular economy objectives and reclaiming elements like silver (Ag), lead (Pb), and silicon (Si). These metals are listed as strategic and precious by the EU commission due to their economic importance and high supply risks. This study investigates ultrasonic-assisted acid leachingAcid leaching for efficiently recovering Ag from EoL solar wafersSolar wafers and preparing Si for vacuum refiningVacuum refining. Various leachingLeaching agents are investigated for this purpose, followed by vacuum refiningVacuum refining of Si from wafers to achieve high-purity Si.