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A semiconductor is doped with phosphorous atoms as impurity. The impurity levels created in the semiconductor are close to the
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bottom of the conduction band
Phosphorous is a pentavalent impurity.
So, resulting semiconductor is a $n$-type semiconductor. The energy band diagram of a $n$-type semiconductor is shown below
So, the energy levels of impurity atom created in the semiconductor are close to the bottom of the conduction band.
So, resulting semiconductor is a $n$-type semiconductor. The energy band diagram of a $n$-type semiconductor is shown below
So, the energy levels of impurity atom created in the semiconductor are close to the bottom of the conduction band.
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