Band offsets at the (100)GaSb/Al2O3 interface from internal electron photoemission study
From electron internal photoemission and photoconductivity measurements at the (100)GaSb/Al2O3 interface, the top of the GaSb valence band is found to be 3.050.10eV below the bottom of the Al2O3 conduction band. This interface band alignment corresponds to conduction and valence band offsets of 2.30.10eV and 3.050.15eV, respectively, indicating that the valence band in GaSb lies energetically well above the valence band of InxGa1?xAs (0?x?0.53) or InP.
band offset internal photoemission interface barrier