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Answer Posted / binay pratap tiwari
N-type semiconductors are prepared by doping pentavalent
atom (e.g. phosphorus) with the intrinsic semiconductor. we
know that atoms are neutral. out of five electron of P-atom
four makes covalent bond. one of the electron is only free
to move. it is remains in the material not escaping so the
n-type semiconductor material is neutral.
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