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← TechnologyWhich degradation process accelerates in high-power LEDs operating at elevated junction temperatures?
A)Electromigration within the metal layers
B)Increased Shockley-Read-Hall recombination✓
C)Auger recombination becomes heavily dominant
D)Resonant energy transfer is greatly reduced
💡 Explanation
Increased junction temperature allows more non-radiative transitions via Shockley-Read-Hall recombination, reducing efficiency because more carriers recombine via defects rather than emitting photons; therefore, light output decreases, rather than other recombination being more prominent under usual operating conditions.
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