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← ScienceWhich electrical behaviour occurs when exceeding the avalanche photodiode's depletion region bias?
A)Increased dark current generation
B)Crystal lattice breakdown✓
C)Reduced thermal noise floor
D)Higher quantum entanglement gain
💡 Explanation
Crystal lattice breakdown takes place because impact ionization creates free carriers initiating an irreversible breakdown of the diode's lattice structure, therefore structural damage occurs, rather than dark current increases which occur with moderate bias beyond optimal gain.
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