Back contact solar cell and production method, and back contact battery assembly

• Main Authors: WU, Zhao, XU, Chen, LI, Zifeng
• Format: Patent
• Language: English
• Published: 23.05.2024
• Subjects: BASIC ELECTRIC ELEMENTS; ELECTRIC SOLID STATE DEVICES NOT OTHERWISE PROVIDED FOR; ELECTRICITY; SEMICONDUCTOR DEVICES

A back contact solar cell and a production method, and a back contact battery assembly, relating to the field of photovoltaic technology. The back contact solar cell comprises a silicon substrate (1), the surface of the silicon substrate (1) facing away from light being divided into a first area and a second area (2), and the second area (2) being doped to form a second carrier collection end; a metal chalcogenide layer (4) deposited on at least the first area of the silicon substrate (1), a first carrier collection end being formed at the area of the metal chalcogenide layer (4) corresponding to the first area; a first electrode (5) correspondingly provided on the first carrier collection end; and a second electrode (6) correspondingly provided at an area corresponding to the second area (2). The collection and transmission of the first carrier are achieved by means of the first carrier collection end. The metal chalcogenide layer (4) has high structural and performance adjustability, good thermal stability, and wide process selection range, and can achieve low lateral conductivity and high longitudinal conductivity.