[CO2] For a compensated semiconductor, the relative position of electron and hole concentrations are shown on figure 1. If the intrinsic carrier concentration is 2.5 x 1015 cm-3 and the total impurity concentration is 1.5 x 1016 cm-3, Calculate the values of the impurity concentrations. Δ Δ PO 3.54x10 cm n Carrier Concentration Figure 1
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Consider two energy levels : E1, E eV above the Fermi level and E2, E eV below the Fermi level. P1 and P2 are the probabilities of E1 and E2 being occupied by the electron respectively. Then
a. P1 > P2
b. P1 = P2
c. P1 < P2
d. P1 and P2 depend on number of free electrons
Answer: C
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