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← TechnologyWhich behavior in photovoltaic cells occurs when reverse bias increases excessively?
A)Avalanche breakdown begins conduction✓
B)Thermal runaway reduces voltage
C)Increased efficiency of electron capture
D)Recombination rate exponentially decreases
💡 Explanation
Avalanche breakdown occurs because high reverse voltage accelerates electrons, causing impact ionization at the p-n junction, therefore increasing current. Rather than thermal runaway or increased efficiency, the junction becomes conductive under extreme reverse bias.
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