Close up of laser edge isolation done on solar cell
c-Si Solar Cell Edge Isolation
Laser process tools enable ultra-narrow c-Si solar cell line scribing for edge isolation while minimizing sub-surface damages such as microcracking.

Superior Reliability & Performance

  • Lasers and Laser-based Systems
  • Laser Measurement and Control
  • Precision Optics
  • Related Accessories

Laser process tools for solar cell Edge Isolation all feature AVIA lasers; currently the dominant laser source for c-Si UV-laser Edge Isolation, with over 90% market share. Within laser Edge Isolation, a high-speed scanner directs UV or green nanosecond laser pulses around the perimeter of cells, scribing narrow grooves between the finger grid and the cell edges. The use of short-wavelength laser output enables ultra-narrow scribe lines (<30 μm), reduced ‘dead’ area around the trenches, and minimized sub-surface laser damage. Sub-surface damage – a negative outcome of using long wavelength IR lasers – can include changes to minority carrier lifetimes and bulk microcracking.

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