P-Type Semiconductor
Category : JEE Main & Advanced
These are obtained by adding a small amount of trivalent impurity to a pure sample of semiconductor (Ge).
(1) Majority charge carriers - holes Minority charge carriers - electrons
(2) \[{{n}_{h}}>>{{n}_{e}};\,{{i}_{h}}>>{{i}_{e}}\]
(3) Conductivity \[\sigma ={{n}_{h}}{{\mu }_{h}}\,e\]
(4) P-type semiconductor is also electrically neutral (not positively charged)
(5) Impurity is called Acceptor impurity.
(6) Acceptor energy level lies just above the valence band.
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