Ibc cell and preparation method therefor

Abstract

An IBC cell and a preparation method therefor includes: (1) subjecting a raw silicon wafer to a texturing treatment, coating a protective layer, and subjecting the protective layer to an etching modification treatment; (2) subjecting the modified silicon wafer to a polishing treatment, and subjecting the polished silicon wafer to LPCVD for growing a TOPCon cell structure, and then performing laser ablation; and (3) cleaning a polycrystalline silicon layer and the protective layer of the silicon wafer after the laser ablation, preparing a passivation layer, and then performing metallization to obtain the IBC cell. A protective layer is provided in the preparation process of the IBC cell, simultaneously meeting the needs of the front textured surface and the back polished surface.

Dependencies are inferred from the claim text.