Selective Laser Ablation of Dielectric Layers

  • Selective Laser ablation of Dielectric Layers Solar_04
    Dielectric layer ablation from solar cell
  • Selective Laser Removal of Dielectric Layers SiNx_ablation_from_crystalline_solar_cells_01
    SiNx ablation from solar cell
  • Selective Laser Removal of Dielectric Layers Ablated_fingers_and_buss_bars_on_a_solar_cell_01
    Ablated fingers and bus bars on a solar cell

Selective laser ablation of dielectric layers on the emitter side of the wafers is done using femtosecond laser pulses. It allows precisely remove upper layer without harming emitter layer.

Selective laser ablation of dielectric layers features:
  • UV radiation
  • Pulse repetition rates up to 100 kHz
  • Average power reaches 1,4 W
  • Forming openings for electrode bus bars and fingers
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