Question

very high temperature extrinsic semiconductor is get to the intrinsic because ​

Answer 1

Answer:

At high temperature the number of electrons in the conduction band (and holes in the valence band) due to thermal excitation (Fermi-Dirac statistics) is much larger than the number due to doping. You can then neglect the extra doped electrons/holes which takes you back to the intrinsic behavior.

Explanation: