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← ScienceWhich outcome occurs when significant doping reduces band gaps in a photodiode?
A)Increased reverse saturation current✓
B)Higher breakdown voltage threshold
C)Reduced sensitivity to infrared
D)Decreased response at shorter wavelengths
💡 Explanation
Increased doping narrows the band gap, leading to increased intrinsic carrier concentration. This causes increased diffusion current, therefore the reverse saturation current rises, rather than decreases, because more carriers can overcome the potential barrier. The other effects are incorrect.
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