Derivative photocurrent spectrum of an InGaAs/GaAs strained-layer superlattice

Fritz, I. J.; Doyle, B. L.; Drummond, T. J.; Biefeld, R. M.; Osbourn, G. C.
June 1986
Applied Physics Letters;6/9/1986, Vol. 48 Issue 23, p1606
Academic Journal
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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