A NON-CONTACT METHOD OF MAKING FRONT AND REAR CONTACT METALLIZATION IN SILICON SOLAR CELLS BY DIRECT LASER SINTERING OF METAL POWDERS

摘要

The invention relates to a non-contact method of making front and rear contact metallization in silicon solar cells by direct laser sintering of metal powders, the method comprising the steps of chemical etching of standard silicon crystal silicon solar cells; forming P-N junction of the cells; removing the parasitic junctions of the formed wafers; passivation of the formed wafers; depositing ARC layer on the wafers; screen printing the front contacts of the wafers; drying the front contacts; screen printing the back contacts; drying the back contacts; co-firing of the front and back contacts