Question: Making use of the energy band structure of silicon estimate the concentration of donors necessary for filling all the equivalent minima of the conduction band

Making use of the energy band structure of silicon estimate the concentration of donors necessary for filling all the equivalent minima of the conduction band near the X point. Would it then be possible for direct e–h recombination at the point to occur? Apply the parabolic approximation of the conduction band and use mde = 0.322m0 for the electron density-of-states effective mass.

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