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Phosphorus concentration as a function of and TESb mass flow . Growth temperature had to be changed depending on Ga concentration: : (solid stars), : (crosses), : (open diamonds), : (solid triangles)
PL spectra of heterostructures with different gallium concentrations at . The phosphorus concentration was chosen to accomplish lattice-match on InP.
Band diagram of the heterostructure at resulting from our PL measurements (solid lines) and from a linear interpolation between GaP and GaSb (dashed lines). Indicated are the band gaps of InP and (solid arrows), as well as the type-II transition energy (dashed arrow).
(a) Band-gap energies of lattice matched to InP (open circles) and type-II transition energies at the interface (solid diamonds) at ; (b) band offset energies in the conduction band (solid squares) and in the valence band (solid triangles) at .
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