All-black-contact solar cell and fabrication method

Abstract

A method of fabricating an all-back-contact (ABC) solar cell is disclosed. A doped layer of a first polarity (102) is formed on a rear side of a wafer (100). A first masking structure (106, 110) is formed on the doped layer of the first polarity. Portions of the first masking structure (106, 110) are removed using a first laser ablation process. Doped regions of a second polarity (118, 135, 137) are formed in areas where the first masking structure has been removed. Contact bars (134, 136) are formed by screen printing and firing such that each contact bar is in contact with one of the doped regions (135, 137).

Dependencies are inferred from the claim text.