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An n-type semiconductor with direct band structure (Eg = 2.5 eV) is applied with a DC voltage shown below. (i) Schematically draw the band diagram

An n-type semiconductor with direct band structure (Eg = 2.5 eV) is applied with a DC voltage shown below. (i) Schematically draw the band diagram for this semiconductor under this DC voltage. (ii) Calculate the longest wavelength in light absorption from this n-type semiconductor with applied DC voltage.

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