Question

which element would you use as an impurity to make germanium an n-type semiconductor?​

Answer 1

To achieve N-type doping in germanium, a pentavalent (group 5) element is used. Most commonly arsenic is used, but it can be antimony, bismuth or phosphorous.

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Answer 2

Answer:

Germanium crystal should be doped with a pentavalent impurity such as phosphorus (P), arsenic (As) or antimony (Sb). These atoms with one electron extra can donate it to the semiconductor to make it n-type