Question

2. The equilibrium and steady state conditions before and after illumination of a silicon semiconductor are characterized by the energy band shown in figure below. Determine for before and after illumination: (Assume room temperature, and use the semiconductor parameters given in the textbook) a) no and po the equilibrium carrier concentrations b) n and p under steady state conditions. c) No? d) e) Do we have low injection condition when the semiconductor is illuminated? What is the resistivity of the semiconductor before and after illumination? Ec Ec Efn Ef EFi 0.32 ev 0.3 ev- En 0.3 ev Efp Ey E, Before After The equilibrium and steady state conditions before and after illumination of a silicon semiconductor are characterized by the energy band shown in figure below. Determine for before and after illumination: 2. (Assume room temperature, and use the semiconductor parameters given in the textbook) a) no and po the equilibrium carrier concentrations b) n and p under steady state conditions c) No? d) Do we have low injection condition when the semiconductor is illuminated? What is the resistivity of the semiconductor before and after illumination? e) Ec Ec Ern Er 0.32 ev 0.3 ev En 0.3 eV Efp E, Before After

Answer 1

EF Ef ER Ev Ar At T=300t 及. ro S1. 3 1、5%。

c) /ST -3 3-086n-C