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We report the use of wavelength-modulated photocurrent spectroscopy to obtain detailed information on quantum well transitions in an In0.14Ga0.86As/GaAs strained-layer superlattice. The spectra are interpreted in terms of a Kronig–Penney model with literature values for offsets and deformation potentials. The effect of the test structure’s built-in electric field must be included to obtain agreement with this theory.
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Fritz et al. (1986) studied this question.
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