Semiconductor Physics and Computational Methods Quiz

Conduction is not possible in semiconductors and insulators when an external electric field is applied because there is a forbidden gap present in these materials. This forbidden gap prevents the movement of electrons to the conduction band, unlike in metals where electrons can easily move and conduct electricity.

The energy difference between a location close to an ion core and another location away from the ion core in silicon is approximately 1 eV.

The approximate distance between the two locations mentioned in the previous question is about 1 Å (10^-10 m).

<p>A field gradient of approximately 1V/(10^-10 m) = 10^10 Vm^-1 is necessary to move an electron from the top of the valence band to the bottom of the conduction band in silicon.</p> Signup and view all the answers

<p>In metals, conduction is possible even with the application of an external electric field as there is no forbidden gap present. However, in semiconductors and insulators, conduction is not possible due to the presence of a forbidden gap which prevents the movement of electrons to the conduction band.</p> Signup and view all the answers

<p>The forbidden gap in semiconductors and insulators prevents conduction when an external electric field is applied.</p> Signup and view all the answers

<p>The energy difference between a location close to an ion core and another location away from the ion core in silicon is approximately 1 eV.</p> Signup and view all the answers

<p>The field gradient necessary to move an electron from the top of the valence band to the bottom of the conduction band in silicon is approximately 1010 Vm-1.</p> Signup and view all the answers

<p>Conduction is not possible in semiconductors and insulators when an external electric field is applied due to the presence of the forbidden gap.</p> Signup and view all the answers

<p>The distance between two locations with an energy difference of approximately 1 eV in silicon is about 1 Å (10^-10 m).</p> Signup and view all the answers