Question

A p-type silicon-metal contact is made with aluminum (?M=4.75 eV). NA=5x1015/cm3, and kT=0.026 eV.

(a) Sketch to scale a thermal equilibrium band diagram for the ideal case.

(b) Comment on the barriers for (i) electrons in the metal (ii) electrons in the silicon (iii) holes in the silicon (iv) holes in the metal

(c) If positive voltage is applied to the semiconductor, show the carrier flux and energy band diagram.

Answer 1

The solution has given in the images attached below:

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