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← TechnologyWhich failure in an LED display increases when pulsed current exceeds specifications?
A)Increased non-radiative recombination rates✓
B)Reduced electron-hole pair generation
C)Lowered forward voltage threshold
D)Improved light extraction efficiency
💡 Explanation
Elevated pulsed currents cause heating at the LED junction, increasing defects; this activates the Shockley-Read-Hall (SRH) recombination mechanism. Because this causes a non-radiative process, energy is dissipated as heat therefore decreasing efficiency, rather than photon emission under normal operation.
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