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← TechnologyWhile operating near maximum current, which outcome occurs when localized imperfections within an LED's semiconductor crystal lattice impair heat dissipation?
A)Thermal runaway degrades light output✓
B)Increased radiative recombination efficiency occurs
C)Electron hole mobility elevates linearly
D)External quantum efficiencies are stabilized
💡 Explanation
When imperfections impede heat flow, resistive heating accelerates a positive feedback loop aka thermal runaway, because increased temperature further elevates resistance; therefore light output diminishes due to non-radiative recombination mechanisms, rather than improved efficiency from carrier behaviour.
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