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← ScienceWhich outcome occurs when electrons encounter a semiconductor's energy barrier?
A)Exponential current decay occurs nearby✓
B)Full electron reflection if energy matches
C)Linear increase in Fermi energy
D)Complete blockage of electron wavefunctions
💡 Explanation
Exponential current decay appears because electron Quantum tunneling allows some electrons to propagate through a barrier, rather than being fully stopped. Therefore, current drops exponentially with the width, rather than immediate reflection or blockage.
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