SOLAR CELL HAVING MULTI-STAGE DOPING, AND METHOD FOR PRODUCING SAID SOLAR CELL

摘要

A solar cell (50; 70) having a multi-stage doping. (52a, 52b, 52c, 54; 72a, 72b, 72c) formed from a dopant of a first type, which doping comprises more heavily doped regions (52a, 5-2b, 52c; 72a, 72b, 72c) and more lightly doped regions (54) and at least one contact (56), arranged in the more heavily doped regions (52a, 52b, 52c; 72a, 72b, 72c), for electrically contacting the more heavily doped regions (52a, 52b, 52c; 72a, 72b, 72c), wherein the more heavily doped regions (52a, 52b, 52c; 72a, 72b, 72c) are arranged such that they form a predefined structure, and the at least one contact (56) extends at least in sections beyond the more heavily doped regions (52a, 52b, 52c; 72a, 72b, 72c) and covers a part of the more lightly doped' regions (54), and a method for producing said solar cell.