An abrupt si p-n Junction (40) (a) Calculate the Fermi level position at 300 K in the p and n region for Na-1018 cm- on one side and No 5x1015 cm on the other (b) Draw an equilibrium band diagram for the junction and determine the contact potential Vo from the diagram for (a) (c) Calculate again the Fermi level at 300 K in the p and n region for the Na=107 cm on one side and Nd=5x104 cm- (d) Draw again an equilibrium band diagram for the junction and determine the contact potential Vo for the case (c) (e) Can you draw and compare the space charge density qNd -qNa and electric field distribution along the pn junction for the case (a) and (c)?