Process for preparing single crystal

Details Process for preparing single crystal Process for preparing single crystal

1984-06-05

1985-08-27

Bernstein, Hiram H.

Adhesive bonding and miscellaneous chemical manufacture

Delaminating processes adapted for specified product

Delaminating in preparation for post processing recycling step

156619, 156DIG70, 156DIG89, C30B 1500

Patent

active

045376522

ABSTRACT:
A process for preparing a single crystal comprising drawing up a single crystal by the Czochralski process and cooling it at a temperature not lower than 600.degree. C. at a reduced pressure or in vacuo, by which a single crystal having a dislocation density of 1.5.times.10.sup.4 cm.sup.2 or less is prepared.

REFERENCES:
patent: 3623905 (1971-11-01), Akai et al.
patent: 3647389 (1972-03-01), Weiner
patent: 4140570 (1979-02-01), Voltmer et al.
patent: 4141779 (1979-02-01), Hill et al.
patent: 4190486 (1980-02-01), Kyle
patent: 4234355 (1980-11-01), Meinders
Bonner, J. Electrochem. Soc.: Solid-State Science and Technology, Aug. 1980, pp. 1798-1800.

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