公开(公告)号：WO2023021515A1

公开(公告)日：2023-02-23

申请号：PCT/IL2022/050899

申请日：2022-08-18

Applicant: SOLARPAINT LTD.

Inventor： EISENBERG, Ygal ,  MAIMON, Eran ,  TIDHAR, Yaron ,  KATZ, Asaf ,  YARKONI, Hod

IPC: H01L31/042 ,  H01L31/0224 ,  H01L31/18 ,  H01L31/0352 ,  H01L31/0392 ,  H01L31/05 ,  H01L31/068 ,  H01L31/02

Abstract: Improved flexible solar panels and photovoltaic devices, and methods and systems for producing them. A solar cell has non-transcending grooves or trenches, that penetrate some, but not all, of a silicon layer or semiconductor wafer of the solar cell. The non-transcending grooves or trenches are segmenting the solar cell into regions, and provide flexibility and mechanical resilience. Selective and localized region-constrained doping of an opposite polarity is performed at particular regions or locations of a surface or front region of the solar cell; as well as selective and localized placement of metallized electrical contacts. Grooving or trenching operations can be performed via a dopant-containing layer, to prevent or reduce recombination at or near exposed surfaces. A particular layout of metallization is used for producing electrical contacts or "fingers" that are dashed or segmented or spaced-apart; such that grooving or trenching or segmentation lines are located along non-metallized gaps between adjacent contacts and between adjacent rows of contacts.