Looking into the furnance
The melting of the silicon takes place at more than 1,400°C. This is followed by crystallization, the solidification of the silicon melt in a vertical direction, starting at the bottom of the crucible and forming a poly-crystalline block.
Band or wire saws cut the silicon block. First the side sections are cut off and then the block is divided into square colums. The cross-section of the columns corresponds to format of the wafers to be produced later.
After removal of residue from the sawing process, each and every wafer is measured fully automatically and sorted with regard to thockness, surface quality and possible damage.
Solar cell production
The matrix unit connects the strings into a matrix, an area of 60 solar cells. n the further course of production, a sandwich is made of solar glass. 3 films and solar cells.
Automatic junction box placement
In a unique, patented and fully automatic process the root places the connecting socket on the rear of the laminate creating the electrical connection.
After the robot has placed the laminates into the frameing station they are pressed into an aluminum frame. The following steps in the production line are performance measurement according to standard test conditions (STC) and the final packaging.