In a solid, like Si, the mobile charge carriers are in constant motion due to their thermal energy. This energy, a classic kinetic energy, is 3kbT/2. a. What is the thermal velocity, vth, of the...

In a solid, like Si, the mobile charge carriers are in constant motion due to their thermal energy. This energy, a classic kinetic energy, is 3kbT/2.

a. What is the thermal velocity, vth, of the charge carriers at room temperature, 300 K? Use the effective mass given in Table 3.14.

b. What is the drift velocity of those carriers, vd, if their mobility, μe, is 1000 cm2/Vs and the applied electric field, E, is 1000 V/cm?

c. Compare the results of parts (a) and (b). Can we cause gas molecules to move faster than their thermal velocity using a pressure gradient? Can we get the charges to move faster than their thermal velocity?