Question

Under the high electric fields in a semiconductor the increasing the electric field

Answer 1

Now an increase in external field will first increase the velocity of current carriers(at first the mobility remains constant), which in turn will increase the current in the semiconductor. Now if we continue to increase the electric field then the mobility first sub linearly decreses and then linearly decreses. So now the velocity of the carries increases slowly and then saturates because the increase in electric field is exactly compensated by the decrese in mobility. A large electric field across the semiconductor will have a tendency to knock out more and more electrons from the Silicin atom which will hinder in the current flow just like metals and hence the decrese in mobility..

Answer 2

Answer:

Explanation:

Now an increase in external field will first increase the velocity of current carriers(at first the mobility remains constant), which in turn will increase the current in the semiconductor. Now if we continue to increase the electric field then the mobility first sub linearly decreses and then linearly decreses. So now the velocity of the carries increases slowly and then saturates because the increase in electric field is exactly compensated by the decrese in mobility. A large electric field across the semiconductor will have a tendency to knock out more and more electrons from the Silicin atom which will hinder in the current flow just like metals and hence the decrese in mobility..