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Which of the following statements is/are correct? 1) Conductor contains a large number of electrons in the conduction band at room temperature. No energy gaps exist and the valence and conduction bands overlap. 2) A semiconductor is a material in which the energy gap is so large that practically no electron can be given enough energy to jump this gap. 3) An insulator is a solid with an energy gap small enough for electrons to cross rather easily from the valence band to conduction band.
Is the following statement true? Statement: On the basis of band theory of solids the semi-conductors have a completely filled valence band, a partially filled conduction band and a narrow forbidden band.
The process of excitation of an electron from valence band to conduction band leaves an empty hole in the valence band and is called as ____________
If δP is the forbidden magnitude value in the pass band and δS is the forbidden magnitude value in the stop band, then which of the following is true in the pass band region?
If δP is the forbidden magnitude value in the pass band and δS is the forbidden magnitude value in th stop band, then which of the following is true in the stop band region?
An intrinsic semiconductor with mass of a hole mh, and mass of an electron me is at a finite temperature T. If the top of the valence band energy is Ev and the bottom of the conduction band energy is Ec, the Fermi energy of the semiconductor is
Which of the following equations represent the correct expression for the band diagram of the p-n junction? (E1=difference between the fermi level of material and conduction band of n material and E2=difference between the conduction band of n material and fermi level of n material)
What is the energy gap between the conduction and valence band of a high conductivity metal?
In the energy level diagram, what is the separation between conduction band and valence band?
Which of the following is energy difference between conduction band and valence band?