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SM ISO690:2012 SCHUTT, Andreas, LUPAN, Oleg, ADELUNG, Rainer. Aluminium-BSF versus PERC solar cells: Study of rear side passivation quality and diffusion length. In: IFMBE Proceedings: . 4th International Conference on Nanotechnologies and Biomedical Engineering, Ed. 4, 18-21 septembrie 2019, Chişinău. Switzerland: Springer Nature Switzerland AG, 2020, Ediția 4, Vol.77, pp. 745-748. ISBN 978-303031865-9. ISSN 16800737. DOI: https://doi.org/10.1007/978-3-030-31866-6_132 |
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IFMBE Proceedings Ediția 4, Vol.77, 2020 |
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Conferința "Conference on Nanotechnologies and Biomedical Engineering" 4, Chişinău, Moldova, 18-21 septembrie 2019 | |||||||
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DOI:https://doi.org/10.1007/978-3-030-31866-6_132 | |||||||
Pag. 745-748 | |||||||
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The impact of (bulk) material and rear surface (contact) quality to the efficiency is found to be quite hard to measure on a processed solar cell. We will show with this paper that CELLO (solar cell local characterization) photo-impedance-spectroscopy measurements are capable of separating bulk from rear side effects on locally resolved maps. This study focuses on multicrystalline Aluminium-BSF solar cells which have been produced according to a co-firing parameter optimization process with a wide parameter space. It is found that the rear side recombination velocity on some locations of the Al-BSF cell is much better than compared to PERC cells. Thus, the full potential of Al-BSF solar cells is much higher than usually expected and anticipated. In the future paste and co-firing optimizations are required to transfer the excellent local values of Al-BSF cells to the full cell area for excellent global values that result in cell efficiencies higher than today PERC solar cells. Thus, the time of Al-BSF solar cells is for our opinion not over yet. |
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Cuvinte-cheie Al-BSF, Characterization, Diffusion length, PERC, photovoltaics |
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