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Define conduction band....

Define conduction band.

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The process of transfer of heat in solids from a region of higher temperature to a region of lower temperature without the actual movement of molecules is called conduction
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Indium antimonide has a band gap of 0.23eV between the valence and the conduction band.Find the temperature at which kT equal the band gap.

The band gap between the valence and the conduction bands in zinc oxide (ZnO) is 3.0eV.Suppose an electron in the conduction band combines with a hole in the valence band and the excess energy is released in the form of electromagnetic radiation .Find the maximum wavelength that can be emitted in this process.

Knowledge Check

  • If the distance between the conduction band and valence band is 1eV, then this combination is

    A
    semiconductor
    B
    metal
    C
    insulator
    D
    conductor

  • In an insulator the energy gap between the conduction band and valence band is of the order of

    A
    `2MeV`
    B
    `5e V`
    C
    `1e V`
    D
    `10^(-3)e V`

  • In an good conductor the forbidden energy gap between the between the conduction band and valence band is of the order of

    A
    infinity
    B
    Zero
    C
    narrow
    D
    wide

    • Similar Questions

    Explore conceptually related problems

    Define conductance and give its unit.

    A doped semiconductor has impurity levels 30meV bleow the conduction band,(a)Is the material m-type or p-type? (b)In a thermal collision,and amount kT of energy is given to the extra electron loosely bound to the impurity ion and this electron is just able to jump into the conduction band. Calculate the temperature T.

    In semiconductors, thermal collisions are responsible for taking a valence electorn to the conduction band.Why does the number of conduction electrons not go on increasing with time as thermal collisions continuously take place?

    The probability of electrons to be found in the conduction band of an intrinsic semiconductor at a finite temperature

    ……… electrons occupy the conduction band.

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