Beschreibung:
<jats:p>Polycrystalline silicon sheets having a 6-in. or 4-in. diameter with a 0.3–0.4-mm thickness have been obtained directly by spinning the silicon melt dropped on the plate. Production time of the sheet formation from the melt is about one second per sheet. The crystallites of the sheet have columnar structures. Material loss in the production process is little or none because of a clean recovery of the surplus silicon. Using this sheet, p-n junction solar cells with an AM1 efficiency of 4.1–6.0% have been made experimentally.</jats:p>