Large-area p-type HIP-MWT silicon solar cells with screen printed contacts exceeding 20% efficiency

We present metal wrap through (MWT) silicon solar cells with passivated surfaces based on a simplified device structure. This so-called HIP-MWT structure (high-performance metal wrap through) does not exhibit an emitter on the rear side and therefore simplifies processing. The confirmed peak efficiency of the fabricated solar cells with an edge length of 125 mm, screen printed contacts and solder pads is 20.2%. To our knowledge, this is the highest value reported for large-area p-type silicon solar cells to date. Schematic structure of the fabricated HIP-MWT solar cells