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← TechnologyIn an LED display operating at high ambient temperature, which consequence results from increased leakage current?
A)Reduced light output efficiency✓
B)Faster response and switching times
C)Band gap energy increases sharply
D)Enhanced electromagnetic interference (EMI)
💡 Explanation
Increased temperature elevates intrinsic carrier concentration, causing thermal runaway in the LED; therefore, higher leakage current increases non-radiative recombination rates like Shockley-Read-Hall (SRH) recombination, because these recombination processes are temperature dependent, decreasing efficiencies, rather than improving responsiveness or band gaps.
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