Question 2. Electron affinity in silicon is 4.01 V and work function of aluminum is 4.28 V. Four different Schottky contacts of silicon-aluminum were made with semiconductors with different doping.

Reference Chapter 9. A. N-type silicon Nd=1E16 cm-3 B. N-type silicon Nd= 7.29E14 cm-3 C. N-type silicon Nd=1E12 cm-3 D. P-type silicon Na=1E16 cm-3 For each case find Vbi and W (depletion width). Use the absolute value of VBi when appropriate. Assume room temperature condition, V=25.9 mV, n;=1.5E10cm³, and E; is in the mid band gap.