Polycrystalline silicon sheets for solar cells by improved spinning method

Polycrystalline silicon sheets for solar cells by improved spinning method

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Large-grain polycrystalline silicon sheets for solar cells, 50 mm square and 0.1 to 0.5 mm thick, have been obtained directly by spinning the silicon melt and diffusing it into mold cavities. Production time from melt is about four sheets per 15 s. Using this sheet, 9 to 10% AM 1.5 solar-cell efficiencies were achieved.


    1. 1)
      • Y. Maeda , T. Yokoyama . Large area silicon sheet for solar cells. Appl. Phys. Lett. , 242 - 244
    2. 2)
      • Maeda, Y., Yokoyama, T., Hide, I.: `Large area silicon sheet produced by the spinning method', Proceedings 16th IEEE Photovoltaic Specialists Conference, 1982, p. 133–136.
    3. 3)
      • Arai, K., Tsuya, N., Takeuchi, T.: `Ultra high speed growth of silicon ribbons for solar cells', Proceedings 14th IEEE Photovoltaic Specialists Conference, 1980, p. 31–38.

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