SemiconductorMedium
Question
When added an impurity into the silicon which one of the following produces n-type of semi-conductors:
Options
A.iron
B.magnesium
C.aluminium
D.phosphorous
Solution
Phosphorus which is pentavalent produces n-type semiconductor. Here only four electrons of phosphorus are used in making bonds with silicon with silicon crystal. fifth electron remains free.
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