After the wafering process, saw damage to the wafers is removed by means of a wet chemical process and a textured surface produced (texturing). By means of various different deposition processes, the solar wafer acquires optimal properties for energy generation. Two well-known solar cell coating processes are PERC and heterojunction technology.
Through the cell coating process on the front and back surfaces, the absorption of sunlight is increased and internal energy losses reduced. Optimum passivation ensures the cell has a long service life.
In order for the current to be captured and conducted away from the resulting solar cell, contacts (fingers) in the form of silver paste are printed on the front and rear using the screen print method. Each finished solar cell is then tested for quality and cell performance.
Our equipment for solar cell production
The performance of each solar cell is measured with high-precision measurement instruments and the cells sorted according to quality.