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Define the term doping. Pure silicon is ...

Define the term doping. Pure silicon is an insulator. Silicon doped with phosphorus is a semiconductor. Silicon doped with gallium is also a semi-conductor. What is difference between the two types of semi-conductors ?

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Silicon-doped with phosphorus will form n-type semi-conductor while silicon doped with gallium will form p-type semi-conductor.
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Pure silicon doped with phosphorus is:

Account for the Silicon is an insulator but silicon doped with phosphorus acts as a semiconductor.

Knowledge Check

  • Silicon doped with electron-rich impurity forms

    A
    p-type semiconductor
    B
    n-type semiconductor
    C
    intrinsic semiconductor
    D
    insulator
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