The stencil is a printing carrier made of woven steel wire mesh with patterns of different sizes, which allows the silver paste to pass through the grid line pattern to form the upper and lower electrodes on the silicon wafer. When heated, the organic solvent in the paste evaporates, forming the electrodes for solar cells.
Stencils for PV printing cells are an important part of cell production. The main types of such stencils include backfield stencils, back pole stencils, main grid positive stencils, and fine grid positive stencils.