Introduction
Solar panels, also known as photovoltaic (PV) modules, convert sunlight into electricity using the photovoltaic effect. The manufacturing process involves several stages, from raw material extraction to final module assembly.
Raw Materials Used
- Silicon (primary material for solar cells)
- Glass (protective front layer)
- Aluminum (frame)
- EVA (Ethylene Vinyl Acetate – encapsulation)
- Backsheet (insulation layer)
- Copper (for wiring)
- Silver paste (for electrical contacts)
Key Components of Solar Panels
- Solar Cells – Convert sunlight into electricity
- Glass Layer – Protects cells
- Encapsulation (EVA) – Holds cells together
- Backsheet – Provides insulation
- Frame – Structural support
- Junction Box – Electrical output interface
Types of Solar Panels
- Monocrystalline (high efficiency)
- Polycrystalline (cost-effective)
- Thin-film (flexible, lightweight)
Environmental and Economic Impact
- Renewable and eco-friendly energy source
- Reduces carbon emissions
- Initial cost is high but long-term savings are significant