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← ScienceWhich phenomenon limits photodiode response time during operation?
A)Electron-hole recombination within bandgap✓
B)Increased quantum tunneling probability
C)Augmented phonon scattering events
D)Self-quenching piezoelectric oscillation modes
💡 Explanation
Photodiode response is limited by electron-hole recombination; the mechanism involves electrons losing energy and momentum to fill holes via bandgap recombination. This reduces carrier density, therefore slowing down response rather than increasing tunneling or phonon effects because those are influenced by other factors.
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