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Which outcome occurs when the electron energy matches a forbidden gap in a semiconductor crystal containing multiple overlapping atomic orbitals?

A)Localized defect state formation
B)Complete signal transmission occurs
C)Reduced thermal noise occurs
D)Increased band-edge effective mass

💡 Explanation

Localized defect states form in such situations because Anderson localization traps electrons due to disorder leading to the disruption of Bloch waves. Therefore localized states form, rather than transmission, reduced noise, or band change, because of destructive interference.

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