Multicrystalline Cell

PV cell manufacturing begins with the ultrasonic cleaning of silicon wafers followed by the chemical treatment of the wafer surface, which reduces the PV cell"s reflection of sunlight. Through a thermal process, or a diffusion process, we then introduce certain impurities into the silicon wafer and form an electrical field within the PV cell. Then an anti-reflection coating is applied to the front surface of the PV cell in order to enhance it"s absorption of sunlight. We screen print negative and positive metal contacts, or electrons, onto the front and back surfaces of the PV cell, with the front contact in a grid pattern to allow sunlight to be absorbed. Silicon and metal electrodes are then connected through an electrode firing process in a conveyor belt furnace at high temperature. We complete the manufacturing of the PV cells by testing and sorting.