Distinguish between p-type and n-type semi conductors.

1.	Distinguish between p-type and n-type semi conductors.
Answer» p-type: (i) p-type semiconductor is obtained by doping a trivalent impurity to a pure semi conductor. (ii) Number of holes is greater than number of electrons i.e. n_h > n_e (iii) holes-majority carriers. (iv) electrons-minority carriers. (v) trivalent doping provides one hole for conduction. (vi) Impurity is called acceptor type. n-type: (i) n-type semiconductor is obtained by doping a pentavalent impurity to a pure semiconductor. (ii) Number of holes is less than number of electrons n_h < n_e (iii) holes-minority carriers. (iv) electrons-majority carriers. (v) Pentavalent doping provides one extra electron for conduction. (vi) Impurity is called donor type.

Answer»

p-type:

(i) p-type semiconductor is obtained by doping a trivalent impurity to a pure semi conductor.

(ii) Number of holes is greater than number of electrons i.e. n_h > n_e

(iii) holes-majority carriers.

(iv) electrons-minority carriers.

(v) trivalent doping provides one hole for conduction.

(vi) Impurity is called acceptor type.

n-type:

(i) n-type semiconductor is obtained by doping a pentavalent impurity to a pure semiconductor.

(ii) Number of holes is less than number of electrons n_h < n_e

(iii) holes-minority carriers.

(iv) electrons-majority carriers.

(v) Pentavalent doping provides one extra electron for conduction.

(vi) Impurity is called donor type.

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