Details
| Original language | English |
|---|---|
| Pages (from-to) | 151-157 |
| Number of pages | 7 |
| Journal | Progress in Photovoltaics: Research and Applications |
| Volume | 16 |
| Issue number | 2 |
| Early online date | 13 Sept 2007 |
| Publication status | Published - Mar 2008 |
| Externally published | Yes |
Abstract
We demonstrate lead-free laser soldering of standard industrial solar cells. The laser-soldered contacts stay stable for more than 240 accelerated ageing cycles by humidity-freeze test and withstand peel forces in excess of 10N/cm. Laser soldering is demonstrated while the cells are lying on the ethylene vinyl acetate (EVA) foil. This permits to connect the solar cells to the lead-free tinned copper ribbons directly on the lamination materials. We also demonstrate soldering on the bottom side by lasering through the glass and the non-polymerized EVA. With the aid of a pick and place robot it thus becomes possible to avoid all string handling. On-laminate laser soldering (OLLS) technique, which permits a high level of automation and process control, induces little thermal and mechanical stress, reduces the handling and should thus be of particular advantage for assembling modules with very thin cells at a high yield.
Keywords
- Interconnection, Laser soldering, Lead-free, Module manufacturing
ASJC Scopus subject areas
- Materials Science(all)
- Electronic, Optical and Magnetic Materials
- Energy(all)
- Renewable Energy, Sustainability and the Environment
- Physics and Astronomy(all)
- Condensed Matter Physics
- Engineering(all)
- Electrical and Electronic Engineering
Sustainable Development Goals
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In: Progress in Photovoltaics: Research and Applications, Vol. 16, No. 2, 03.2008, p. 151-157.
Research output: Contribution to journal › Article › Research › peer review
}
TY - JOUR
T1 - Lead-free on-laminate laser soldering
T2 - A new module assembling concept
AU - Gast, Maren
AU - Köntges, Marc
AU - Brendel, Rolf
N1 - Funding Information: We thank Mr Anas Moalem from the Laser ZentrumHannover LZH for the preparation of the opticalmicrographs of the solder joints. We thank SCHOTTSolar GmbH for manufacturing the conventionallysoldered reference string. Parts of this work weresupported by the LASER-PV project that is fundedby the State of Lower Saxony.
PY - 2008/3
Y1 - 2008/3
N2 - We demonstrate lead-free laser soldering of standard industrial solar cells. The laser-soldered contacts stay stable for more than 240 accelerated ageing cycles by humidity-freeze test and withstand peel forces in excess of 10N/cm. Laser soldering is demonstrated while the cells are lying on the ethylene vinyl acetate (EVA) foil. This permits to connect the solar cells to the lead-free tinned copper ribbons directly on the lamination materials. We also demonstrate soldering on the bottom side by lasering through the glass and the non-polymerized EVA. With the aid of a pick and place robot it thus becomes possible to avoid all string handling. On-laminate laser soldering (OLLS) technique, which permits a high level of automation and process control, induces little thermal and mechanical stress, reduces the handling and should thus be of particular advantage for assembling modules with very thin cells at a high yield.
AB - We demonstrate lead-free laser soldering of standard industrial solar cells. The laser-soldered contacts stay stable for more than 240 accelerated ageing cycles by humidity-freeze test and withstand peel forces in excess of 10N/cm. Laser soldering is demonstrated while the cells are lying on the ethylene vinyl acetate (EVA) foil. This permits to connect the solar cells to the lead-free tinned copper ribbons directly on the lamination materials. We also demonstrate soldering on the bottom side by lasering through the glass and the non-polymerized EVA. With the aid of a pick and place robot it thus becomes possible to avoid all string handling. On-laminate laser soldering (OLLS) technique, which permits a high level of automation and process control, induces little thermal and mechanical stress, reduces the handling and should thus be of particular advantage for assembling modules with very thin cells at a high yield.
KW - Interconnection
KW - Laser soldering
KW - Lead-free
KW - Module manufacturing
UR - http://www.scopus.com/inward/record.url?scp=41049118146&partnerID=8YFLogxK
U2 - 10.1002/pip.782
DO - 10.1002/pip.782
M3 - Article
AN - SCOPUS:41049118146
VL - 16
SP - 151
EP - 157
JO - Progress in Photovoltaics: Research and Applications
JF - Progress in Photovoltaics: Research and Applications
SN - 1062-7995
IS - 2
ER -