The electron effective mass in the conduction band of a certainsemiconductor is

Question

The electron effective mass in the conduction band of a certainsemiconductor is m* = 0.19m0, where m0 is the rest mass of a free electron. An electron inthe conduction band (see Fig 1) has an energy of 0.1 eV. What is the velocity of this electron?
(hint v = (h/2?)k/m*)

The electron effective mass in the conduction band of a certain semiconductor is m* = 0.19m0, where m0 is the rest mass of a free electron. An electron in the conduction band (see Fig 1) has an energy of 0.1 eV. What is the velocity of this electron?

Explanation / Answer

v = h*k/2pi*m* = h/lambda*m* = (hc/lambda)/c*m* = E/c*m* = (0.1*1.60217657

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