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Explain carefully what is meant by effective mass in the context of semiconductor physics. The energy...

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Physics

Explain carefully what is meant by effective mass in the contextof semiconductor physics. The energy band dispersion relation (Evs. k) for a simple one-dimensional monatomic semiconductor oflattice constant a can be written-

? = ?0 [1 − cos(??)]

Derive an expression for the effective mass (m*) of an electronin the semiconductor, and sketch how m* varies as a function ofk.

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3.7 Ratings (613 Votes)
The effective mass of a semiconductor is obtained by fitting theactual Ek diagram around the conduction band minimum orthe valence band maximum by a parabola While    See Answer
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