Emitter wrap-through solar cell and method of making an emitter wrap-through solar cell

摘要

The invention relates to an emitter wrap-through (EWT) solar cell (10) comprising a planar semiconductor substrate (13) having a front side (11) and a rear side (12), a plurality of holes (14) facing the front side (11) and the rear side (12) connect, and only on the back side (12) arranged collecting electrical electrical contacts (31, 32). According to the invention, the front side (11) has heavily doped regions (21, 23, 24, 25) and lightly doped regions (22) of a first type, such that the holes (14) are each in a heavily doped region (21, 23, 24, 25 ) or adjacent to such. The invention further relates to a method for producing such an EWT solar cell and to masks for use in the production method.