Optimizing photovoltaic module glass reliability

Glass is a proven, excellent substrate and cover for photovoltaic applications. But glass can be a source of module reliability problems if not properly fabricated. Glass reliability issues can include brittle failure due to mechanical and thermal stresses, surface weathering, lamination adhesion, TCO adhesion, moisture ingress, and anti-reflective coating durability. A synopsis of typical problems and how to prevent them is provided for both new and current module manufacturers.