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A bar of n-type Si with a cross-sectional area of 1 mm x 1 mm and...

A bar of n-type Si with a cross-sectional area of 1 mm x 1 mm and a length of 1 cm is connected to a 2 V battery and is carrying a current of 2 mA at 300 K. (a) Calculate the thermal equilibrium electron and hole concentrations in the bar. (b) Calculate the dopant concentration assuming that only donors with energy level 0.148 eV away from the conduction band are present. (c) Determine the temperature at which the bar will become intrinsic.

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