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- Title
From high-efficiency n-type solar cells to modules exceeding 20% efficiency with aluminum-based cell interconnection.
- Authors
Merkle, Agnes; Schulte‐Huxel, Henning; Blankemeyer, Susanne; Feilhaber, Ilka; Bock, Robert; Steckenreiter, Verena; Kajari‐Schroeder, Sarah; Harder, Nils‐Peter; Brendel, Rolf
- Abstract
ABSTRACT We present the integrated development of back-contacted solar cells and an adequate module interconnection for a high-efficiency photovoltaic module. We report on a large area (125 × 125) mm2 back-junction back-contact n-type solar cell metallized with aluminum having a total area conversion efficiency of 20.7%. To transfer the high conversion efficiency to the module, we use the laser welding process named aluminum-based mechanical and electrical laser interconnection for module integration of these back-contacted solar cells. We further analyze the impact of the busbars of our back-junction back-contact cells on the cell performance and report on optimization of the cell/module interface. The new cells have an adapted rear-side geometry by omitting the emitter busbar. A proof-of-concept module consisting of these cells is presented. Copyright © 2012 John Wiley & Sons, Ltd.
- Subjects
SOLAR cell design; PHOTOVOLTAIC cells; ALUMINUM; MATHEMATICAL optimization; GEOMETRY; BUS conductors (Electricity)
- Publication
Progress in Photovoltaics, 2013, Vol 21, Issue 6, p1354
- ISSN
1062-7995
- Publication type
Article
- DOI
10.1002/pip.2297