Method for application of a bus bar contact of silver after a back surface field (BSF) of aluminium of a solar cell and solar cell

摘要

Method for application of a bus bar contact of silver after a back surface field (BSF) of aluminium of a solar cell and solar cell, a method is provided for the application of the busbarsSilver rear contact to a back surface field (BSF) of aluminium of a solar cell.The method involves providing a substrate of cu00e9lulo solar.With front and back; printing a layer of coating of aluminum on the back side of the substrate complete solar cell; drying the coating layer of aluminum and a layer of the printedLumu00ednio complete; printing and drying the paste peeling on the aluminum layer completes in the areas where the buses of silver are desired; printing and drying a paste, silver conTouch the front Ba front part of the substrate of the solar cell to produce an electrode of the front grille; CO combustion and cooling of the front and back of the solar cell.During combustion the folder in which peeling at the excess of aluminum powder in the aluminum layer, which, during the cooling of the solar cell paste peeling contracts,Solidified and peels off with excess aluminum powder to make a BSF aluminium complete with open areas; and printing.Drying and combustion of a paste of silver contacts later in open areas of the BSF to produce bus bars of silver.