An ideal abrupt silicon pn junction has a
\(N_{A} = 2 x 10^{17} cm^{-3} , N_{D} = 2 x 10^{15} cm^{-3} , \)
1) With derivation steps, calculate internal potential barrier V0 at 300K and 400K, respectively;
2) Comment on the effect of temperature on Vo using an energy band diagram;
3) Determine the depletion (SCR) layer width W and the maximum field Em under equilibrium condition at T = 300K. Compare the depletion layer thick (xn and xp) on both side of the junction.