公开(公告)号：US20200343391A1

公开(公告)日：2020-10-29

申请号：US16837755

申请日：2020-04-01

Applicant: LG ELECTRONICS INC.

Inventor： Jaewoo CHOI ,  Hanjong YU ,  Hyoungkyun KONG

IPC: H01L31/0216

Abstract: Provided are a solar cell and a manufacturing method thereof. The solar cell includes a semiconductor substrate, a conductivity type region positioned at or on the semiconductor substrate and including impurities, an electrode electrically connected to the conductivity type region, and an insulating layer positioned on at least one of one surface or the opposite surface of the semiconductor substrate, wherein the insulating layer includes: a first layer positioned on the semiconductor substrate and including an oxygen (O)-based material, a second layer positioned on the first layer, an anti-reflective layer positioned on the second layer, and a third layer positioned on the anti-reflective layer and including a silicon (Si)-based material and a carbon (C)-based material, wherein a bandgap of the first layer is formed to be higher than a bandgap of each of the second layer, the anti-reflective layer, and the third layer.