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High-efficiency solar cells with laser-grooved buried contact front and laser-fired rear for industrial production

: Schultz, O.; Glunz, S.W.; Warta, W.; Preu, R.; Grohe, A.; Köber, M.; Willeke, G.P.; Russel, R.; Fernandez, J.; Morilla, C.; Bueno, R.; Vincueria, I.

Volltext urn:nbn:de:0011-n-666429 (185 KByte PDF)
MD5 Fingerprint: 51e9eb6b60a5646b452df6ea4c2e6ebe
Erstellt am: 3.10.2012

Poortmans, J. ; European Commission, Joint Research Centre -JRC-:
21st European Photovoltaic Solar Energy Conference 2006. Proceedings. CD-ROM : Proceedings of the international conference held in Dresden, Germany, 4 - 8 September 2006
München: WIP-Renewable Energies, 2006
ISBN: 3-936338-20-5
European Photovoltaic Solar Energy Conference <21, 2006, Dresden>
Konferenzbeitrag, Elektronische Publikation
Fraunhofer ISE ()

The LGBG technology for high efficiency cells has grown in ten years from pilot line to 60 MWp per annum manufacturing capacity. Many improvements to the manufacturing process have been achieved in labour productivity through automation, increased laser grooving speeds and the introduction of in-line processes. Progress has been made in increasing the solar cell efficiency on monocrystalline silicon solar cells from a base line of 16.2% in present production to 17% in the new facility. Pilot line cells have demonstrated 18.3% efficiency and modelling has shown 20% cells are achievable in production. A small area cell with LGBG contacts has been made with an efficiency of 20%.