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Fine-Line Screen Printing in Large Area Laser Grooved, Buried Contact Silicon Solar Cells
A. Cole, S. Roberts, K.C. Heasman, D. Tregurtha, T. Bruton, L. Serenelli, E. Salza, M. Izzi, M. Tucci, L. Pirozzi
Buried Contacts, Laser Processing, Screen Printing
Wafer-Based Silicon Solar Cells and Materials Technology
Subtopic: Mono- and Multicrystalline Silicon Cells and Materials, Processing Technology of
Event: 23rd European Photovoltaic Solar Energy Conference and Exhibition, 1-5 September 2008, Valencia, Spain
Session: 2CV.5.28
1677 - 1681
ISBN: 3-936338-24-8
Paper DOI: 10.4229/23rdEUPVSEC2008-2CV.5.28
0,00 EUR
Document(s): paper


Laser grooved buried contact (LGBC) solar cell technology is an attractive method for the production of solar cells designed to operate at one sun, and at low to medium concentration. This is mainly due to the low shading of the solar cell front by the grid contact and the front selective emitter under it, which ensures better collection for the short wavelength light. However, compared to standard screen printed solar cells, LGBC cells have a higher efficiency but require a more complex manufacturing process. As part of the EU funded project, “Lab2Line” we are marrying the screen printed and LGBC solar cell processing techniques in order to produce high efficiency 1 sun solar cells on large area (125x125 mm) wafers at the lowest cost. A fine line, screen printing technology has been used previously [1, 2, 3] along with LGBC processes to produce solar cells on multicrystaline Si. Using improved processing steps, this project aims to produce industrially scalable production of high efficiency, fully Screen Printed, Laser Grooved, Buried Contact Solar Cells (SPBCSCs) on large area monocrystalline wafers.