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Photoreflectance and photoluminescence investigations of a step-like quantum well tailored at : The energy level structure and the Stokes shift
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10.1063/1.1854729
/content/aip/journal/jap/97/5/10.1063/1.1854729
http://aip.metastore.ingenta.com/content/aip/journal/jap/97/5/10.1063/1.1854729
View: Figures

Figures

Image of FIG. 1.
FIG. 1.

Room temperature photoreflectance spectra of as-grown step-like QW structure (i) and structure (ii).

Image of FIG. 2.
FIG. 2.

Photoreflectance spectra (solid lines) measured at for as-grown (a) and annealed QW structure (b) together with Kramers–Kronig modulus (dashed lines).

Image of FIG. 3.
FIG. 3.

Band diagram of the step-like QW structure obtained on the basis of the matching of theoretical calculations with experimental data. This diagram has been obtained for the following parameters: for and for interfaces; .

Image of FIG. 4.
FIG. 4.

The energy difference between the second and the first electron level vs the electron effective mass. Calculations were performed for different depths of the electron QW, i.e., different band gap alignments. The solid, dashed and dotted lines correspond to , 0.85, and 0.9, for interface, respectively, at for interface.

Image of FIG. 5.
FIG. 5.

Energies of QW transitions vs the for interface. The solid, dashed and dotted lines correspond , 0.9, and 1.0, for interface, respectively.

Image of FIG. 6.
FIG. 6.

Comparison of photoluminescence and photoreflectance spectra in the vicinity of the ground state transition for the as-grown QW structure.

Image of FIG. 7.
FIG. 7.

Comparison of photoluminescence and photoreflectance spectra in the vicinity of the ground state transition for the annealed QW structure.

Image of FIG. 8.
FIG. 8.

Comparison of the photoluminescence line shape for the as-grown (dashed line) and annealed (solid line) QW structure.

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/content/aip/journal/jap/97/5/10.1063/1.1854729
2005-02-15
2014-04-16
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Photoreflectance and photoluminescence investigations of a step-like GaInNAsSb∕GaAsN∕GaAs quantum well tailored at 1.5μm: The energy level structure and the Stokes shift
http://aip.metastore.ingenta.com/content/aip/journal/jap/97/5/10.1063/1.1854729
10.1063/1.1854729
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