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Which outcome occurs when rapid LED cycling exceeds thermal capacity?

A)Increased thermal runaway risk
B)Decreased radiative recombination efficiency
C)Enhanced quantum tunneling probability
D)Improved electron mobility within diffusion

💡 Explanation

Increased thermal runaway risk occurs, facilitated via positive feedback. The increased temperature reduces the LED’s band gap via band-gap narrowing, thus allowing more current, especially if the bias isn't adjusted because it amplifies heat accumulation, therefore increasing thermal-runaway rather than improved mobility.

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