VORRICHTUNG ZUM HERSTELLEN VON GROSSFLAECHIGEN, BANDFOERMIGEN SILIZIUMKOERPERN FUER SOLARZELLEN

摘要

Apparatus for the manufacture of large-surfaced, band-shaped silicon bodies for solar cells through a continuous layering process which uses a net-like structured graphite carrier unit. The net-like structure is used in conjunction with a melting pot made from graphite for receiving silicon smelt. The smelt is fed via a drain opening provided in the floor section of the melting pot to the carrier unit guided through a canal which has been arranged in horizontal direction below the melting pot. In order to ensure a continuous replacement of the smelt volume in the layering canal, the canal is shaped in downward direction as a shallow basin made from quartz, whereby the basin areas "a" and "b" are of different depth. In this manner, a "reserve volume" is provided, which ensures a uniform layering. The apparatus allows a continuous production of silicon bands for solar cells.