公开(公告)号：US11538945B2

公开(公告)日：2022-12-27

申请号：US16560384

申请日：2019-09-04

Applicant: Shangrao Jinko solar Technology Development Co., LTD

Inventor： Changseo Park ,  Yoonsil Jin ,  Youngho Choe

IPC: H01L31/0216 ,  H01L31/068 ,  H01L31/18 ,  H01L31/0224

Abstract: A bifacial solar cell includes a silicon substrate; an emitter layer; a plurality of first electrodes locally on the emitter layer; a first aluminum oxide layer on the emitter layer; a first silicon oxide layer between the first aluminum oxide layer and the emitter layer; a first anti-reflection layer on the first aluminum oxide layer; a back surface field layer on the silicon substrate; a second aluminum oxide layer on the silicon substrate; a second silicon oxide layer between the second aluminum oxide layer and the silicon substrate; a second anti-reflection layer on the second aluminum oxide layer; and a plurality of second electrodes respectively on the back surface field layers through the second anti-reflection layer, the second aluminum oxide layer and the second silicon oxide layer.