**Unformatted text preview: **a) If the diode barrier height is 0.9 eV and the sample has a uniform doping concentration of 10 17 cm-3 donors, then calculate and plot the 1 C 2 versus voltage from - 1.0 to + 0.1 volts? Label the curve’s slope and voltage axes intercept. b) Repeat part a) with a donor density of 6(10 17 ) cm-3 . Assume all donors are ionized, and the fermi energy is at the conduction band edge. c) Draw thermal equilibrium band diagrams corresponding to parts a) and c) labeling everything. Note: The relative dielectric constant for GaAs is 13.1 and its eﬀective density of states in the conduction band is 4 . 7(10 17 ) cm-3 . THE END...

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