M6 166mm MWT Solar Cell

                                                                                                                                     What is MWT?

    Different to conventional solar cell technologies, MWT technology transfers the current collected by fingers on the front side of a cell to the back side through silver paste, which is filled with tiny holes of around 120 μm in diameter made by a laser on a silicon wafer. With the elimination of bus-bars on the front side, the light receiving area is significantly increased,   resulting in a direct improvement in panel efficiency. Silver consumption and minority carrier recombination loss at the metal electrode/emitter interface are also greatly reduced.

    There are several advantages for MWT over other alternatives. The non-bus-bar structure eliminates welding stress which can cause tiny cracks and harm panel performance. The encapsulation of the MWT cell to panel reduces series resistance and working temperature, which improves panel reliability and is more appropriate for ultrathin wafer application. 

    Benefitting from its unique encapsulation structure, MWT enables a solar cell to utilize thinner wafers to 130μm or even less while maintaining high production yield. According to Sunport Power, it has been proven that the encapsulation of an MWT panel can support super thin wafers with a thickness of only 100μm, 43% thinner than the current mainstream thickness of 175μm. The thickness Sunport uses in its existing MWT + PERC production lines for mass production output is currently 150μm, with plans to reduce this to 140μm in the near future. 

Engineering Drawing(mm)