Rückseitenkontaktierte Solarzelle und Fotovoltaisches Modul

Details

Veröffentlichungs-Nr.

EP4712734

Anmeldetag

12. September 2025

Veröffentlichung

18. März 2026

Rechtsraum

EP

Abstract

The present application discloses a back contact solar cell and a photovoltaic module, and relates to the field of photovoltaic technologies, to cause a first dielectric passivation layer to have a relatively high field passivation effect and a relatively high chemical passivation effect on a first doped semiconductor part, and reduce field passivation impact of a second dielectric passivation layer on a second doped semiconductor part. The back contact solar cell includes a semiconductor substrate, a first doped semiconductor part, a second doped semiconductor part, a first dielectric passivation layer, and a second dielectric passivation layer. Each of the first dielectric passivation layer and the second dielectric passivation layer includes a first passivation sub-layer having a field passivation function. A conductivity type of the first doped semiconductor part is opposite to that of fixed charges of the first passivation sub-layer. Each of the first dielectric passivation layer and the second dielectric passivation layer further includes a second passivation sub-layer having a chemical passivation function.

Anmelder

Firma

Longi Green Energy Technology Co., Ltd.

Land

🇨🇳 China