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Title: Solar cell contact formation using laser ablation

The formation of solar cell contacts using a laser is described. A method of fabricating a back-contact solar cell includes forming a poly-crystalline material layer above a single-crystalline substrate. The method also includes forming a dielectric material stack above the poly-crystalline material layer. The method also includes forming, by laser ablation, a plurality of contacts holes in the dielectric material stack, each of the contact holes exposing a portion of the poly-crystalline material layer; and forming conductive contacts in the plurality of contact holes.
Inventors:
; ;
Issue Date:
OSTI Identifier:
1195928
Assignee:
SunPower Corporation (San Jose, CA) GFO
Patent Number(s):
9,087,939
Application Number:
14/334,401
Contract Number:
FC36-07GO17043
Resource Relation:
Patent File Date: 2014 Jul 17
Research Org:
SunPower Corporation, San Jose, CA (United States)
Sponsoring Org:
USDOE
Country of Publication:
United States
Language:
English
Subject:
14 SOLAR ENERGY; 36 MATERIALS SCIENCE