Schmid Group

photovoltaics Wafer Cleaning

Features

After the wire sawing process the wafers are cleaned very gently with the flushing lances. The cleaning agent is led through the lances into the interior channels of the beam. The lower side of the channels has been cut by the wire in the previous sawing step. The cleaning agent is now flushed through these kerfs in between each individual wafer and achieves a uniform full surface cleaning.

After precleaning and singulation the wafers enter a final cleaning step. wafers are processed through several cleaning steps by a horizontal inline transport system.

By combination of chemical and mechanical cleaning and low water consumption an ideal cleaning result is achived at very low cost of ownership at the same time.