Mobility of electrons in a semiconductor is defined as the ratio drift velocity to the applied electric field. If, for an n-type semiconductor, the density of electrons is 10^19m^-3and their mobility…

Question

Mobility of electrons in a semiconductor is defined as the ratio drift velocity to the applied electric field. If, for an n-type semiconductor, the density of electrons is 10^19m^-3and their mobility is 1.6m^2/(V.s) then the resistivity of the semiconductor (since it is an n-type semiconductor contribution of holes is ignored) is close to:

Accepted Answer

Correct answer: C. (c) As we know, current density, j= σE= nev_d = ne v_dE= neμ 1 = = 1n_ee _e= Resistivity = 110^19 1.6 10^19-19 1.6 or P=0.4 Ωm

Solution

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