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Assertion:To make p type semiconductor ,...

Assertion:To make p type semiconductor , pentavalent impurity like phosphorus is mixed with Si.
Reason: Pentavalent impurity produces free electrons.

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Knowledge Check

  • P -type semiconductors are made by adding impurity element

    A
    `As`
    B
    `P`
    C
    `B`
    D
    `Bi`

  • p-type semi-conductors are made by mixing silicon with impurities of-

    A
    germanium
    B
    boron
    C
    arsenic
    D
    antimony

  • p type semi conductor is formed when trace amount of impurity is added to silicon. The number of valence electrons in the impurity atom must be

    A
    1
    B
    2
    C
    3
    D
    5

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    In a n-type semiconductor each pentavalent dopant atom contributes only one electron.

    How does the energy gap in semiconductor vary, when doped, with a pentavalent impurity?

    How does the energy gap in an instrinsic semiconductor vary, when doped with a pentavalent impurity and a trivalent impurity. Draw their energy band diagrams.

    To get p-type semiconductor , impurity to be added to silicon should have wihich of the following number of valence electrons?

    Assertion: p-type semiconductors are good conductors of electricity due to metal excees defects Reason: f-centres are created due to metal excess defects

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