Oberflächenpassivierungsstruktur einer Geschnittenen Solarzelle, Herstellungsverfahren Dafür, Geschnittene Solarzelle und Photovoltaikmodul

Details

Veröffentlichungs-Nr.

EP4788097

Anmeldetag

24. Februar 2025

Veröffentlichung

28. Mai 2026

Rechtsraum

EP

IPC

H10F77/70

Abstract

Provided are a surface passivation structure for a cut solar cell, a preparation method thereof, a cut solar cell, and a photovoltaic module. The surface passivation structure includes a silicon substrate, where one side or two opposite sides of the silicon substrate are laser-cut surfaces; a front/back surface of the silicon substrate includes a base region located in a central portion and small textured regions located on four side edges; the base region is provided with a boron emitter; a front passivation and anti-reflection layer covers the boron emitter and the small textured regions; surfaces of the boron emitter and the small textured regions are provided with pyramidal textured structures; and a pyramid in the base region has a larger dimension than pyramids in the small textured regions. This application removes pn junctions on a laser-cut edge and a non-laser-cut edge of the cut cell and forms small pyramidal textured structures. This reduces the negative impact of edge carrier recombination on efficiency, lowers the efficiency variation across different positions of the cut cell, and improves the overall efficiency of the cut cell and power of a corresponding module.

Anmelder

Firma

Teranergy Technology Co., Ltd.

Land

🇨🇳 China

Fachgebiete