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Investigation and development of industrial feasible cleaning sequences prior to silicon nitride deposition enhancing multicrystalline silicon solar cell efficiency

: Keipert-Colberg, S.; Ickler, B.; Bellendin, U.; Krause, C.; Kopfer, J.M.; Botchak Mouafi, Y.P.; Kerscher, B.; Müller, S.; Biro, D.; Rinio, M.; Borchert, D.

Fulltext urn:nbn:de:0011-n-1433182 (124 KByte PDF)
MD5 Fingerprint: 737c4c07ec2a6d92e450c375d243a1bf
Created on: 18.8.2012

Sinke, W. ; WIP - Renewable Energies, München; European Commission; UNESCO; World Council for Renewable Energy; International Photovoltaic Equipment Association:
24th European Photovoltaic Solar Energy Conference 2009. CD-ROM : The compiled State-of-the-Art of PV Solar Technology and Deployment. Proceedings of the International Conference held in Hamburg, 21-25 September 2009
München, 2009
ISBN: 3-936338-25-6
European Photovoltaic Solar Energy Conference and Exhibition (EU PVSEC) <24, 2009, Hamburg>
Conference Paper, Electronic Publication
Fraunhofer ISE ()

This paper gives an insight into the effects of different wet chemical cleaning procedures prior to the silicon nitride deposition. The investigation of different emitters (with respect to sheet resistances and diffusion methods) showed the same cell parameter trends concerning different cleaning treatments. It was also found that cleanings with a strong influence on the cell parameters lead to pronounced changes in the emitter sheet resistance as well. This makes emitter material abrasion a likely candidate for an explanation of the observed effects on cell level. Combining cell results with internal quantum efficiencies, sheet resistance measurements and spreading resistance analyses allow for a first estimation concerning valuable combinations of emitters and cleanings.