Germanium or silicon becomes an extrinsic semiconductor due to which defect?
A
Schottky defect
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B
Chemical impurity
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C
Frenkel defect
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D
Both A and B
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Solution
The correct option is D Chemical impurity An extrinsic semiconductor is a semiconductor that has been doped, that is, into which a doping agent (impurities) can be introduced giving it different electrical properties than the pure semiconductor.