In a semiconductor, the forbidden energy gap between the valence band and the conduction band is of the order is

Question

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Answer 1

Forbidden energy gap, also known as band gap refers to the energy difference $(e V)$ between the top of valence band and the bottom of the conduction band in materials. Current flowing through the materials is due to the electron transfer from the valence band to the conduction band.
As the electrical conductivity of semiconductors lies between the conductors and the insulators, thus a small but non-zero bandgap $(\approx 1 e V)$ occurs in the semiconductors.
Example: Bandgap in silicon and germanium is $1.11 e V$ and $0.67 e V$ respectively.

Answer 2

Forbidden energy gap, also known as band gap refers to the energy difference

(e V)

between the top of valence band and the bottom of the conduction band in materials. Current flowing through the materials is due to the electron transfer from the valence band to the conduction band.

As the electrical conductivity of semiconductors lies between the conductors and the insulators, thus a small but non-zero bandgap

(\approx 1 e V)

occurs in the semiconductors.

Example: Bandgap in silicon and germanium is

1.11 e V

and

0.67 e V

respectively.

In a semiconductor, the forbidden energy gap between the valence band and the conduction band is of the order is

$1 M e V$

$0.1 M e V$

$1 e V$

$5 e V$

If the band-gap between valence band and conduction band in a material is $5.0 e V$ , then the material is a/an

In semiconductors, the forbidden energy gap between valence band and conduction band is of the order of :

In a metal, the separation between conduction band and valence band is of the order

In an insulator, the energy gap between conduction band and valence band is about

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

Revise with Concepts

Metals, Conductors and semiconductors

Electron Energies in Solids

In a semiconductor, the forbidden energy gap between the valence band and the conduction band is of the order is

1MeV

0.1MeV

1eV

5eV

If the band-gap between valence band and conduction band in a material is 5.0 eV, then the material is a/an

In semiconductors, the forbidden energy gap between valence band and conduction band is of the order of :

In a metal, the separation between conduction band and valence band is of the order

In an insulator, the energy gap between conduction band and valence band is about

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

Revise with Concepts

Metals, Conductors and semiconductors

Electron Energies in Solids

$1 M e V$

$0.1 M e V$

$1 e V$

$5 e V$

If the band-gap between valence band and conduction band in a material is $5.0 e V$ , then the material is a/an