Publikation:

Comparison of buried contact- and screen printed 100% UMG solar cells resulting in 16.2% efficiency

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Braun_opus-103979.pdf
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2009

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http://nbn-resolving.de/urn:nbn:de:bsz:352-opus-103979
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https://doi.org/10.4229/24thEUPVSEC2009-2CV.5.7
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Proceedings of the 24th European PV SEC, Hamburg, 21. - 25. September 2009. München: WIP, 2009, pp. 1736-1739. ISBN 3-936338-25-6. Available under: doi: 10.4229/24thEUPVSEC2009-2CV.5.7

Zusammenfassung

In this paper we analyzed multicrystalline upgraded metallurgical grade silicon (UMG) wafer material. This was done by comparison of two different solar cell processes with a detailed analysis of the process steps. The screen printing process is a well known and widespread industrial standard solar cell process, which offers good results and serves as a reference process. Due to an effective bulk passivation with hydrogen the screen printed solar cells have a high internal quantum efficiency (IQE) in the long wavelength regime. The buried contact solar cell process is a high efficiency cell process which offers due to a selective emitter design and low shading losses excellent results on Cz wafer material. The selective emitter structure offers a high IQE in the blue response. Additional characterization of the bulk by spatially resolved bulk lifetime measurement, internal quantum efficiency and reflection measurements for both solar cell processes was performed. Screen printed solar cells with efficiencies up to 16.2% and buried contact solar cells with efficiencies up to 15.5% were produced.

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Fachgebiet (DDC)
530 Physik

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Metallurgical-Grade, Buried Contacts, Screen Printing

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24th European Photovoltaic Solar Energy Conference, 21. Sept. 2009 - 25. Sept. 2009, Hamburg
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ISO 690BRAUN, Stefan, Bernd RAABE, Dietmar KOHLER, Sven SEREN, Giso HAHN, 2009. Comparison of buried contact- and screen printed 100% UMG solar cells resulting in 16.2% efficiency. 24th European Photovoltaic Solar Energy Conference. Hamburg, 21. Sept. 2009 - 25. Sept. 2009. In: Proceedings of the 24th European PV SEC, Hamburg, 21. - 25. September 2009. München: WIP, 2009, pp. 1736-1739. ISBN 3-936338-25-6. Available under: doi: 10.4229/24thEUPVSEC2009-2CV.5.7
BibTex
@inproceedings{Braun2009Compa-888,
  year={2009},
  doi={10.4229/24thEUPVSEC2009-2CV.5.7},
  title={Comparison of buried contact- and screen printed 100% UMG solar cells resulting in 16.2% efficiency},
  isbn={3-936338-25-6},
  publisher={WIP},
  address={München},
  booktitle={Proceedings of the 24th European PV SEC, Hamburg, 21. - 25. September 2009},
  pages={1736--1739},
  author={Braun, Stefan and Raabe, Bernd and Kohler, Dietmar and Seren, Sven and Hahn, Giso}
}
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