Si and Ge used for semiconductors are require | vedclass

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(A) Semiconductor materials like $Si$ and $Ge$ are usually purified by zone refining.Zone refining is based on the principle of fractional crystallisa

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zone-refining

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(A) Semiconductor materials like $Si$ and $Ge$ are usually purified by zone refining.Zone refining is based on the principle of fractional crystallisation.Due to the difference in the solubility of impurities in the molten and solid states of the metal,the impurities concentrate in the molten zone and are moved to one end,where they are finally removed.

$Si$ and $Ge$ used for semiconductors are required to be of high purity and hence purified by:

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