Apparatus for semiconductor ribbon-to-ribbon conversion

Details Apparatus for semiconductor ribbon-to-ribbon conversion Apparatus for semiconductor ribbon-to-ribbon conversion

1981-09-14

1984-01-24

Bernstein, Hiram H.

Chemical apparatus and process disinfecting, deodorizing, preser

Physical type apparatus

Crystallizer

156DIG98, C30B 1306, C30B 1332

Patent

active

044276389

ABSTRACT:
Apparatus is provided for semiconductor ribbon-to-ribbon conversion in a rigid edge mode. A combination carrier and mask is provided by which the ribbon is secured during the conversion process. The carrier holds the ribbon and simultaneously masks the edges of the ribbon from the heating effects of an impinging energy beam. The energy beam, such as a laser or electron beam, impinges on the ribbon and creates a molten zone which extends through the thickness of the ribbon. During the growth process, the molten zone is caused to move along the length of the ribbon. The mask prevents melting of the extreme edge portions of the ribbon and thus allows a rapid growth rate and a stable molten zone without sophisticated electronic equipment to gate the energy beam at the ribbon edges.

REFERENCES:
patent: 4199397 (1980-04-01), Gurtler
patent: 4325777 (1982-04-01), Yarwood et al.
Soviet Physics-Solid State, vol. 8, No. 2, 2/66, Tsivinskii et al.

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