which of the following statements are true about semiconductor ?

Options

A. silicon doped with electron rich impurity is a type semiconductor
B. Silicon doped with an electrons rich impuriy is an n-type semipucoter
C. Delocalised electrons increase the conductivity of doped silicon
D. An electron vacancy incease the conductivity of n- type semiconductor

Answer

B,C

Explanation

silicon soped with an electron rich ompurity is an n-type semiconductor , Condcity of n- type semiconductor is due to presence of free electron delocalisation of electrons increase the conductivity of deped silicon due to increase in mobility of electron.