To get the highest luminous efficiency within the solar cell it needs to prevent direct reflection of incident light. For this it is necessary to etch a texture of pyramids into the wafers surface. In most cases this process steps will be done through a wet chemical process.
For the deposition of amorphous silicon films deposited by PECVD on front and back of the HJT cells HELiA-PECVD is used.
The passivation of the wafer back surface is an important process step in the manufacture of PERC cells (cells with a conversion coating, and local contacts on the wafer back side).
To manufacture a high quality solar module it requires solar cells with the same performance class. Meyer Burger offers various systems for testing and classification of standard and high efficiency cells.
Process Intelligence is the key to an integrated understanding of the whole Production. Even more: it provides the data base for continouse optimization of the processes. improvement of the fab output and efficiency as well as growing yield is the main advantage of this future oriented technology.
With the Meyer Burger Group, the focus in the area of cell production lies entirely on the efficiency of the single solar cells and the development of new and cost-efficient manufacturing processes. While the new heterojunction cell technology (HJT) achieves cell efficiencies of over 22% as well as reduced manufacturing costs, an upgrade with MB PERC technology allows an efficiency of 20.5% using standard cells. An additional focus lies on the cell performance within the module. The precise fine tuning between the cell and both the wafer and the module processes allow the outstanding cell performance to be transformed to the module and to be used by the end customer.