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| Content Provider | IEEE Xplore Digital Library |
|---|---|
| Author | Hacke, Peter Murphy, Brian Meakin, David Dominguez, Jason Jaramillo, Johnny Yamasaki, Michael Gee, James |
| Copyright Year | 2008 |
| Description | Author affiliation: Advent Solar, Inc., Albuquerque, NM, United States (Hacke, Peter; Murphy, Brian; Meakin, David; Dominguez, Jason; Jaramillo, Johnny; Yamasaki, Michael; Gee, James) |
| Abstract | Back-contact crystalline-silicon photovoltaic solar cells and modules offer a number of advantages including the elimination of grid shadowing losses, reduced cost by use of thinner silicon substrates, simpler module assembly, and improved aesthetics. While the existing method for interconnecting and stringing edge-connected back contact cells is acceptably straight-forward and reliable, there are further gains to be exploited when you have both contact polarities on one side of the cell. In this work, we produce ‘busbarless’ emitter wrap-through (EWT) solar cells that use about 65% less gridline Ag metallization mass compared to the edge tab design. Further, series resistance power losses are reduced by extraction of current from more places on the cell rear leading to a fill factor improvement of about 6% (relative) on the module level. Series resistance and current-generation losses associated with large rear bondpads and bus bars are eliminated. Use of thin Si wafers is enabled because of the reduced Ag metallization mass and by interconnection with conductive adhesives leading to reduced bow. The busbarless cell design interconnected with conductive adhesives passes International Electrotechnical Commission damp heat and thermal cycling tests. |
| Starting Page | 1 |
| Ending Page | 5 |
| File Size | 6519843 |
| Page Count | 5 |
| File Format | |
| ISBN | 9781424416400 |
| ISSN | 01608371 |
| DOI | 10.1109/PVSC.2008.4922442 |
| Language | English |
| Publisher | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Publisher Date | 2008-05-11 |
| Publisher Place | USA |
| Access Restriction | Subscribed |
| Rights Holder | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Subject Keyword | Photovoltaic cells Metallization Conductive adhesives Crystallization Photovoltaic systems Solar power generation Shadow mapping Costs Silicon Assembly |
| Content Type | Text |
| Resource Type | Article |
| Subject | Industrial and Manufacturing Engineering Control and Systems Engineering Electrical and Electronic Engineering |
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