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← TechnologyFor LEDs operating at elevated temperature, which outcome accelerates due to increased ionic mobility?
A)Non-radiative recombination increases exponentially✓
B)Quantum well intermixing stabilizes spectrum
C)Radiative efficiency linearly improves overall
D)External quantum efficiency remains stable
💡 Explanation
Increased temperatures accelerate the diffusion of defects which act as sites to promote non-radiative combination through the Shockley-Read-Hall (SRH) mechanism. This lowers the luminescence efficiency because the electrons lose energy without emitting light rather than improved performance.
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