Explain the difference between direct and indirect bandgap materials. Sketch the two situations. If phonons were not
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Explain the difference between direct and indirect bandgap materials. Sketch the two situations. If phonons were not allowed to provide the necessary momentum in an indirect bandgap excitation, what other mechanisms can you think of which could make the absorption process happen in another way?
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The bandgap represents the minimum energy difference between the top of the valence band and the bottom of the conduction band However the top of the ...View the full answer
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