Question: In the case of modulation doping, donor electrons can fall down from states in the barrier into a quantum-confined state in the quantum well. The

In the case of modulation doping, donor electrons can fall down from states in the barrier into a quantum-confined state in the quantum well. The Fermi level in the barrier material is nearly the same as the barrier conduction band level. Draw a schematic of the band bending in the case of a wide quantum well sandwiched between two n-doped barriers.

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