Impact of temperature and doping on LETID and regeneration in mc-Si

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SMETS, Arno, ed. and others. 33rd European Photovoltaic Solar Energy Conference and Exhibition : proceedings of the international conference. München: WIP, 2017, pp. 569-572. ISSN 2196-0992. ISBN 3-936338-47-7. Available under: doi: 10.4229/EUPVSEC20172017-2AV.1.40
Zusammenfassung

Light and elevated temperature induced degradation can be observed in multicrystalline Si PERC solar cells and results in efficiency losses of up to 12%rel. This work investigates the impact of temperature as well as doping on the degradation and regeneration behavior of lifetime samples. While ungettered Ga-doped samples did not show any regeneration effect within the duration of the experiment, increasing the treatment temperature sped up the degradation and regeneration where it could be observed. Ga-doped samples showed a slower degradation compared to B-doped samples. For higher temperatures (≥200°C) the lifetimes during regeneration exceeded the initial lifetimes before starting the illumination treatment for the gettered samples. After regeneration at higher temperature, the stability of lifetime at 75°C was tested. When tested after treatment at 150°C and before the lifetime exceeded the initial value, it stayed stable. After treatment at 250°C until the lifetime exceeded the initial lifetime, it decreased again during the stability test. However, the kinetics of this decrease was much slower than during the initial degradation.

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Fachgebiet (DDC)
530 Physik
Schlagwörter
Degradation, Lifetime, Multicrystalline Silicon
Konferenz
33rd European Photovoltaic Solar Energy Conference and Exhibition : EU PVSEC 2017, 25. Sept. 2017 - 29. Sept. 2017, Amsterdam
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Zitieren
ISO 690FRITZ, Jakob, Annika ZUSCHLAG, Daniel SKORKA, Andreas SCHMID, Giso HAHN, 2017. Impact of temperature and doping on LETID and regeneration in mc-Si. 33rd European Photovoltaic Solar Energy Conference and Exhibition : EU PVSEC 2017. Amsterdam, 25. Sept. 2017 - 29. Sept. 2017. In: SMETS, Arno, ed. and others. 33rd European Photovoltaic Solar Energy Conference and Exhibition : proceedings of the international conference. München: WIP, 2017, pp. 569-572. ISSN 2196-0992. ISBN 3-936338-47-7. Available under: doi: 10.4229/EUPVSEC20172017-2AV.1.40
BibTex
@inproceedings{Fritz2017Impac-42288,
  year={2017},
  doi={10.4229/EUPVSEC20172017-2AV.1.40},
  title={Impact of temperature and doping on LETID and regeneration in mc-Si},
  isbn={3-936338-47-7},
  issn={2196-0992},
  publisher={WIP},
  address={München},
  booktitle={33rd European Photovoltaic Solar Energy Conference and Exhibition : proceedings of the international conference},
  pages={569--572},
  editor={Smets, Arno},
  author={Fritz, Jakob and Zuschlag, Annika and Skorka, Daniel and Schmid, Andreas and Hahn, Giso}
}
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