A germanium sample is doped with donors at a level 2 x 1014 /cm3 and no acceptors. Given that ni = 2.4 x 1013 /cm3 at 300K: a) Find the thermal equilibrium electron and hole concentrations at 250K. b) Repeat part a) for 350K. c) Speculate on what happens to very low doped materials as temperature increases.

A germanium sample is doped with donors at a level 2 x 1014 /cm3 and no acceptors. Given that ni = 2.4 x 1013 /cm3 at 300K: a) Find the thermal equilibrium electron and hole concentrations at 250K. b) Repeat part a) for 350K. c) Speculate on what happens to very low doped materials as temperature increases.

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images - A germanium sample is doped with donors at a level 2 x 1014 /cm3 and no acceptors. Given that ni = 2.4 x 1013 /cm3 at 300K: a) Find the thermal equilibrium electron and hole concentrations at 250K. b) Repeat part a) for 350K. c) Speculate on what happens to very low doped materials as temperature increases.

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