sentences:  The Maxeon design starts with the same basic silicon cell, but changes the electrical connections.The silver wiring on the front is eliminated and both the positive and negative electrode fingers are deposited on the back of the cell, eliminating light blockage.The back of the cell replaces the thin aluminum layer with a thicker copper one, which both improves electrical performance as well as offering a much more physically robust platform while eliminating corrosion that occurs in the aluminum over time.