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How to obtain silicon ingots of 10-15cm diameter?

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+1 vote
in Linear Integrated Circuits by (38.2k points)
How to obtain silicon ingots of 10-15cm diameter?

(a) By crystal pulling process

(b) By crystal melting process

(c) By crystal growing process

(d) All of the mentioned

I have been asked this question in a job interview.

Query is from Basic Planar Process in portion IC Fabrication of Linear Integrated Circuits

1 Answer

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by (39.8k points)
Accurate choice is (a) By crystal pulling process

Simplify with an easy explanation: During crystal pulling process, the seed crystal and the crucible rotate in opposite direction, in order to produce ingots of circular cross section (diameter of 10/15cm normally obtained).

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