Formation mechanisms of low-dimensional semiconductor nanostructures grown by OMCVD on nonplanar substrates
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The molecular-beam epitaxial growth conditions of (N + 1)(InAs)m/N(GaAs)n short period superlattices (SPSs) on GaAs substrates have been optimized. Hall electrical properties measured by the van der Pauw method were compared to low-temperature photolumines ...
In a recent paper, we measured the hole diffusion length in a single quantum well (SQW) by a novel method using SEM-cathodoluminescence, assuming that the carriers diffuse only in the SQW. This assumption needs to be checked. Therefore, we present here a m ...
Hall electrical properties measured by the van der Pauw method and low-temperature photoluminescence (77 K PL) spectra of pseudomorphic GaAs/InyGa1-yAs/AlGaAs modulation-doped field-effect transistor-type heterostructures grown by molecular-beam epitaxy we ...
We report the growth behaviour of InP, InGaAs and InGaAsP on non-planar InP substrates where ridges were formed with (111)A, (211)A, (111)B and (551BAR) sidewall planes. All three materials grow uniformly on the whole patterned surface with (111)A and (211 ...
It is shown that during the growth of InxGa1-xAs on GaAs, the strain-induced lattice distortion oscillates as a function of monolayer completion in both purely 2D and quasi-2D layer-by-layer growth regimes. This is explained by considering that nontetragon ...
Difficulties are described which are encountered in NMR spectroscopy when attempting to invert simultaneously several multiplets that comprise transitions which share common energy levels. These problems turn out to be due to the undesirable excitation of ...
The lateral transport of excess carriers in metal organic chemical vapor deposition grown GaAs/AlxGa1-xAs(x=0.5) 20 angstrom thick single quantum well structures is studied by cathodoluminescence (CL) between 5 K less-than-or-equal-to T less-than-or-equal- ...
It is shown that Te and Pb, which segregate at the surface during the epitaxial growth of GaAs, respectively, decrease and increase the surface diffusion length. This indicates that under the generic term ''surfactant,'' there are two types of surface segr ...