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← TechnologyWhich mechanism causes increased reverse current in photodiodes?
A)Increased minority carrier concentration✓
B)Decreased depletion region width
C)Augmented doping concentration gradient
D)Reduced operating temperature threshold
💡 Explanation
Increased reverse current occurs because photon absorption near the p-n junction creates more electron-hole pairs; the electric field sweeps minority carriers across the depletion region due to carrier diffusion. Therefore, current increases rather than being impeded under normal operating conditions.
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