InAs/InAs0.865Sb0.135 quantum wells are characterized using magneto-photoluminescence. Band-to-band transitions are found at energies lower than the band gaps of either the InAs or the InAs0.865Sb0.135 with photoluminescence emission at wavelengths up to 4.8 µm. By modeling the quantum size shifts of the photoluminescence transitions and their energy shift in a magnetic field, the valence band offset between InAs and In(As,Sb) is deduced to be type II with electron confinement in the In(As,Sb) alloy and hole confinement in InAs. © 1996 American Institute of Physics.
|Number of pages||3|
|Journal||Applied Physics Letters|
|Publication status||Published - 21 Oct 1996|