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A comprehensive description of band gap and effective masses of III–V semiconductor bulk and ultra-thin body (UTB) structures under realistic biaxial and uniaxial strain is given using numerical simulations from four different electronic structure codes. The consistency between the different tools is discussed in depth. The nearest neighbor sp3d5s* empirical tight-binding model is found to reproduce...
We present and thoroughly compare band-structures computed with density functional theory, tight-binding, k·p and non-parabolic effective mass models. Parameter sets for the non-parabolic Γ, the L and X valleys and intervalley bandgaps are extracted for bulk InAs, GaAs and InGaAs. We then consider quantum-wells with thickness ranging from 3nm to 10nm and the bandgap dependence on film thickness is...
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