Question

Circuits

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.


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