Photovoltaics

Photovoltaic manufacture can be divided broadly into three different technical approaches:

• Silicon wafer photovoltaics (‘wafers’)
• Thin film photovoltaics (‘panels’)
• Flexible or dye-sensitised solar cells (‘flexible’)

Laser processing is an important production tool for all three technologies, Rofin’s application laboratories have huge experience in applying our lasers to:

• Edge isolation of wafers
• Edge deletion of glass panels
• Patterning / isolating wafers
• Patterning and P1/P2/P3 scribing of panels
• Hole drilling for back-side connection of wafers (EWT & MWT)
• Wafer ablation for laser fired contacts
• Laser grooved buried contacts (LGBC)
• Isolation scribes and ablation to clean electrical contacts for flexible
• Various PV connector soldering and welding