PRODUCTION PROCESS
NorSun’s core industry domain is the worldwide high efficiency solar energy segment, in particular the polysilicon sourcing to wafer slicing portion of the photovoltaic value chain.
Industry domain:
PRODUCTION PROCESS
NorSun produces single crystal silicon wafers from polysilicon (high purity grade silicon raw material > 99.99999%).
NorSun uses the
Czochralski process whereby polysilicon is melted in a crystal puller, a seed crystal is lowered into the melt and a single crystal ingot is slowly pulled out of the molten metal, thereby establishing the atomic order.
The ingot is shaped into pseudo-square blocks and sliced into thin pseudo-square wafers using a slurry based wire saw technique or NorSun's newly developed fixed abrasive sawing technique.
The wafers are cleaned through NorSun's washing lines, packed and shipped to a select group of high efficiency cell producers.