Control of oxygen in silicon crystals

Adhesive bonding and miscellaneous chemical manufacture – Delaminating processes adapted for specified product – Delaminating in preparation for post processing recycling step

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23273SP, 423324, B01J 1718, C01B 3302

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active

040408957

ABSTRACT:
The seed to tail oxygen concentration gradient in silicon crystals, which are drawn from a silicon melt contained in a silica vessel according to the Czochralski process, is controlled by a process employing stop-go crucible rotation to provide fluid shearing at the melt-crucible interface.

REFERENCES:
patent: 3353914 (1967-11-01), Pickar
patent: 3490877 (1970-01-01), Bollen
patent: 3873463 (1975-03-01), Tolksdorf
patent: 3929557 (1975-12-01), Goodrum
IBM Tech. Discl. Bull., vol 14, No. 5, Oct. 1971, p. 1631.
IBM Tech. Discl. Bull., vol. 13, No. 6, Nov. 1970, p. 1571.
Scheel, Journal of Crystal Growth, vol. 13/14, 1972, pp. 560-565.
IBM Tech. Discl. Bull., Mueller-Krumbhaar et al., vol. 17, No. 3, Aug. '74, pp. 903-904.

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