Consider a silicon wafer having Nc=2.8*1019cm-3 and the Fermi energy i – McqOptions

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1.	Consider a silicon wafer having Nc=2.8*10¹⁹cm^-3 and the Fermi energy is .25eV below the conduction band. Calculate the equilibrium concentrations of electrons at T=300K?
A.	t18*10<sup>16</sup>cm<sup>-3</sup>
B.	t1.8*10<sup>16</sup>cm<sup>-3</sup>
C.	t1.8*10<sup>14</sup>cm<sup>-3</sup>
D.	t180*10<sup>16</sup>cm<sup>-3</sup>
Answer» B. t1.8*10<sup>16</sup>cm<sup>-3</sup>

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