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Which risk increases when a resonant tunneling diode (RTD) junction layer thickness decreases?

A)Greater thermal carrier generation
B)Reduced quantum well confinement
C)Increased phonon scattering events
D)Enhanced impurity diffusion rate

💡 Explanation

Decreasing the junction layer thickness increases the risk of reduced quantum well confinement, due to a smaller physical space limiting the quantum mechanical effects. Therefore, energy levels smear, and clear band gaps diminish, rather than enhanced thermal carrier generation under thermal equilibrium.

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