Manufacturing 100-µm-thick silicon solar cells with efficiencies greater than 20% in a pilot production line

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2015
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European Union (EU): 256695
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20 percent efficiency on less than 100 um thick industrieally feasible c-Si solar cells (20plus)
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Physica Status Solidi (A) : Applications and Materials Science. 2015, 212(1), pp. 13-24. ISSN 0031-8965. eISSN 1521-396X. Available under: doi: 10.1002/pssa.201431241
Zusammenfassung

Reducing wafer thickness while increasing power conversion efficiency is the most effective way to reduce cost per Watt of a silicon photovoltaic module. Within the European project 20 percent efficiency on less than 100-µm-thick, industrially feasible crystalline silicon solar cells (“20plµs”), we study the whole process chain for thin wafers, from wafering to module integration and life-cycle analysis. We investigate three different solar cell fabrication routes, categorized according to the temperature of the junction formation process and the wafer doping type: p-type silicon high temperature, n-type silicon high temperature and n-type silicon low temperature. For each route, an efficiency of 19.5% or greater is achieved on wafers less than 100 µm thick, with a maximum efficiency of 21.1% on an 80-µm-thick wafer. The n-type high temperature route is then transferred to a pilot production line, and a median solar cell efficiency of 20.0% is demonstrated on 100-µm-thick wafers.

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530 Physik
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high efficiency, pilot production, silicon, solar cells, thin wafers
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ISO 690TERHEIDEN, Barbara, Tabitha BALLMANN, Renate HORBELT, Yvonne SCHIELE, Sabine SEREN, Jan EBSER, Giso HAHN, 2015. Manufacturing 100-µm-thick silicon solar cells with efficiencies greater than 20% in a pilot production line. In: Physica Status Solidi (A) : Applications and Materials Science. 2015, 212(1), pp. 13-24. ISSN 0031-8965. eISSN 1521-396X. Available under: doi: 10.1002/pssa.201431241
BibTex
@article{Terheiden2015Manuf-30916,
  year={2015},
  doi={10.1002/pssa.201431241},
  title={Manufacturing 100-µm-thick silicon solar cells with efficiencies greater than 20% in a pilot production line},
  number={1},
  volume={212},
  issn={0031-8965},
  journal={Physica Status Solidi (A) : Applications and Materials Science},
  pages={13--24},
  author={Terheiden, Barbara and Ballmann, Tabitha and Horbelt, Renate and Schiele, Yvonne and Seren, Sabine and Ebser, Jan and Hahn, Giso}
}
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