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14 Q1. Given a NA = 10 /cm doped Si sample a) b) c) Calculate Ef as a function of Temperature T at 500K intervals from 3000K to 5000K. Any conclusion could be drawn from a) part? If the donor has ND-1014/cm3 to replace the NA, what is the Ef at 3000K, 4000K and 5000K The band gap affected by temperature should be included. Q2. At 300K, please find the doping limit of both n-type and p-type Ge to have non-degenerate condition. (Eg of Ge is 0.66 eV, effective mass of hole is 0.29 mo and electron is 0.56 mo, ni is 1.83 103)

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