公开(公告)号：US20190131475A1

公开(公告)日：2019-05-02

申请号：US16309794

申请日：2017-06-23

Applicant: BYD COMPANY LIMITED

Inventor： Xiang SUN ,  Yunjiang YAO ,  Ye TIAN ,  Yuntan ZHOU ,  Meiling TENG ,  Zhanfeng JIANG

IPC: H01L31/05 ,  H01L31/028 ,  H01L31/0224 ,  H01L31/0216 ,  H01L31/18

Abstract: The disclosure discloses a photovoltaic cell, a photovoltaic cell array, a solar cell, and a method for preparing a photovoltaic cell. The photovoltaic cell includes: a silicon wafer, a gate line layer, a side electrode, a first electrode, a back electrical layer, and a second electrode. The silicon wafer includes a silicon substrate, a front diffusion layer, a side division layer, and a back division layer. At least a part of at least one of the side division layer and the back division layer is a diffusion layer whose type is the same as that of the front diffusion layer. The gate line layer is disposed on the front diffusion layer. The side electrode is disposed on the side division layer and is electrically connected to the gate line layer. The first electrode is disposed on the back division layer and is electrically connected to the side electrode. The back electrical layer and the second electrode are both disposed on a back surface of the silicon wafer. The back electrical layer is electrically connected to the second electrode and is not in contact with the first electrode.