公开(公告)号：US10347776B2

公开(公告)日：2019-07-09

申请号：US15024762

申请日：2014-07-31

Applicant: Changzhou Trina Solar Energy Co., Ltd.

Inventor： Yifeng Chen ,  Pierre J. Verlinden ,  Zhiqiang Feng ,  Hui Shen ,  Pietro P. Altermatt

IPC: H01L31/00 ,  H01L31/18 ,  H01L31/0224 ,  H01L31/0216 ,  H01L31/028

Abstract: Disclosed are a back-surface bridge type contact electrode of a crystalline silicon solar battery and a preparation method therefor. The back-surface bridge type contact electrode of a crystalline silicon solar battery includes a local electrode connected to a local back surface field and a back surface electrode which is covered with a back surface passivation film on a contact surface with a silicon wafer substrate, at least one bridge electrode is provided between the local electrode and the back surface electrode, the contact surface of the bridge electrode and the silicon wafer substrate is also covered with the back surface passivation film, the local electrode is connected to the back surface electrode via the bridge electrode, and the back surface passivation film is also provided, besides at the connection region of the bridge electrode, between the local electrode and the back surface electrode.