…   “all contacts are placed at the back of the cell.

Using EWT cell architecture with p-type wafers, single-crystal silicon and proven manufacturing processes, Applied has achieved 18.4% cell efficiency on large area cells in R&D testing.

In addition to providing higher conversion efficiency, back contacts lend themselves to new, automated module assembly techniques which eliminate the complex and error-prone task of stringing cells together.

Process results using this technique, called monolithic module assembly (MMA), have shown encapsulation losses of less than 1%, demonstrating the robustness of this high-efficiency, module fabrication technique. ”   …

Via Applied Materials: PV Technology Advancements.