Silicon and wafer preparation

This lecture covers the process of silicon and wafer preparation for photovoltaic applications, including metallurgical grade silicon reduction, purification via the gas phase, ingot fabrication, and wafering techniques such as diamond wire sawing. It also discusses the mechanical properties of silicon wafers, alternative wafer preparation methods, and the impact of grey energy and CO2 emissions. The instructor emphasizes the importance of reducing kerf losses, improving wafer strength, and increasing efficiency to lower costs and environmental impact.