Investigations on laser fired contacting and annealing of RST silicon PERC-type solar cells

Albrecht, Benjamin; Botchak, Yves Patrick; De Moro, Fabrice; Keller, Philipp; Hahn, Giso

Investigations on laser fired contacting and annealing of RST silicon PERC-type solar cells

Dateien

Albrecht_0-374884.pdfGröße: 759.74 KBDownloads: 187

Datum

2016

Autor:innen

Albrecht, Benjamin

Botchak, Yves Patrick

De Moro, Fabrice

Keller, Philipp

Hahn, Giso

Open Access-Veröffentlichung

Open Access Green

Sammlungen

Physik

Publikationstyp

Beitrag zu einem Konferenzband

Publikationsstatus

Published

Erschienen in

Proceedings of 32nd EU PVSEC. München: WIP, 2016, pp. 858-862. ISBN 3-936338-41-8. Available under: doi: 10.4229/EUPVSEC20162016-2AV.3.39

Zusammenfassung

The Ribbon on Sacrificial Template (RST) casting process is a kerf-loss free direct wafer casting method, which enables the production of silicon ribbon wafers below 100 μm thickness for thin solar cells. But the thinner the cell, backside passivation is all the more important. In our lab-type PERC solar cell process, the back contact is realized by laser fired contacts (LFC). In this study the influence of different LFC parameters on back side passivation is shown, based on lifetime samples made of standard 1 Ohmcm FZ wafers. With the best parameter set, surface recombination velocity Seff,LFC of 34.1 cm/s is possible with reasonable contacting. Beside backside passivation, an improvement of bulk lifetime of RST material was achieved by different surface passivation and annealing steps. These improvements resulted in a new effective lifetime record for RST material of 39.6 μs (measured by QSSPC).

Fachgebiet (DDC)

530 Physik

Schlagwörter

Annealing, Lifetime, Passivation, Ribbon Silicon, Laser Fired Contacts

Konferenz

32nd European Photovoltaic Solar Energy Conference and Exhibition, 20. Juni 2016 - 24. Juni 2016, Munich

Zitieren

ISO 690

ALBRECHT, Benjamin, Yves Patrick BOTCHAK, Fabrice DE MORO, Philipp KELLER, Giso HAHN, 2016. Investigations on laser fired contacting and annealing of RST silicon PERC-type solar cells. 32nd European Photovoltaic Solar Energy Conference and Exhibition. Munich, 20. Juni 2016 - 24. Juni 2016. In: Proceedings of 32nd EU PVSEC. München: WIP, 2016, pp. 858-862. ISBN 3-936338-41-8. Available under: doi: 10.4229/EUPVSEC20162016-2AV.3.39

BibTex

@inproceedings{Albrecht2016Inves-36558,
  year={2016},
  doi={10.4229/EUPVSEC20162016-2AV.3.39},
  title={Investigations on laser fired contacting and annealing of RST silicon PERC-type solar cells},
  isbn={3-936338-41-8},
  publisher={WIP},
  address={München},
  booktitle={Proceedings of 32nd EU PVSEC},
  pages={858--862},
  author={Albrecht, Benjamin and Botchak, Yves Patrick and De Moro, Fabrice and Keller, Philipp and Hahn, Giso}
}

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