Poly-Si (Polycrystalline Silicon)

Polycrystalline silicon, or poly-Si, is a type of silicon material made up of many small silicon crystals. It’s commonly used in solar panels and electronic devices because it’s more affordable than single-crystal silicon while still providing good electrical properties. During manufacturing, silicon is melted and then cooled to form a block with multiple crystals, giving it a somewhat grainy structure. This material efficiently converts sunlight into electricity in solar cells and is also used in semiconductor fabrication for various electronic components. Its balance of performance and cost makes it a prevalent choice in renewable energy and electronics industries.