What is the Role of EVA in Solar Panels?
- Source:WSL Solar
- Time:2025-11-25
- Visitors:
EVA (Ethylene Vinyl Acetate) serves as a protective encapsulant in solar panels, shielding the solar cells from moisture, dust, dirt, and physical damage. It is a transparent, adhesive thermoplastic sheet that holds the solar cells in place between the glass and the backsheet, while also allowing sunlight to pass through to the cells. Its role is crucial for maintaining the solar panel's efficiency and ensuring its long-term durability and performance.
Key roles of EVA
-
Protection: EVA acts as a protective barrier against environmental factors like moisture, dirt, and humidity, which can degrade the solar cells over time.
-
Adhesion and support: It provides a strong adhesive bond that holds the solar cells securely between the front glass and the backsheet, preventing them from shifting or becoming damaged.
-
Optical transparency: The film is transparent, allowing sunlight to pass through to the solar cells, which is essential for energy production.
-
Durability: EVA is designed to be durable and has a long lifespan, contributing significantly to the longevity of the solar panel's performance.
-
Insulation: It helps to insulate the cells and their circuits, which can soften shocks and vibrations.
How it works
-
During the manufacturing process, solar cells are placed between two sheets of EVA film. The sheets are then heated and laminated, which causes the EVA to become a clear, adhesive, and protective film that seals the cells in place.
Posted by Carrie Wong / WSL Solar
WSL Solar has been a quality and professional manufacturer of custom solar panels, solar mini panels, IoT solar panels and solar solution provider in China since 2006.
https://www.wsl-solar.com
