| 摘要 |
A method and apparatus for stabilizing the edge positions of a ribbon drawn from a melt includes the use of wettable strings drawn in parallel up through the melt surface, the ribbon being grown between the strings. In one embodiment, the string stabilized edge technique is utilized for pulling of the ribbon at an angle to the melt surface. String introduction techniques are also described including several in which the strings are introduced to the melt through apertures in the bottom of the crucible utilized for containing the melt. Also described is a technique for minimizing the introduction of impurities from the melt into a ribbon by constantly flowing the melt under the growth interface in a direction perpendicular to the plane of the growing ribbon.
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