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Barrier composition dependence of the internal electric field in quantum wells
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10.1063/1.2740576
/content/aip/journal/apl/90/20/10.1063/1.2740576
http://aip.metastore.ingenta.com/content/aip/journal/apl/90/20/10.1063/1.2740576
View: Figures

Figures

Image of FIG. 1.
FIG. 1.

(Color online) Photoluminescence spectra of width QWs and barrier layers with a Mg concentration in the barriers of 0.16 and 0.22.

Image of FIG. 2.
FIG. 2.

(Color online) Comparison of the calculated exciton transition energy neglecting (dashed line) and including (full line) the electric field for different Mg contents with low temperature experimental PL energies. Green dashed lines indicate the energy of free-exciton in bulk ZnO. The experimental data for are from Ref. 6.

Image of FIG. 3.
FIG. 3.

(Color online) Variation of the internal electric field as a function of Mg content in the barriers.

Image of FIG. 4.
FIG. 4.

(Color online) Calculated excitonic transition energies in SQWs taking into account the built-in electric field for different Mg composition.

Image of FIG. 5.
FIG. 5.

(Color online) Calculated energy shift of the excitonic transition between bulk ZnO and a QW for (a) no electric field, (b) a width-dependent electric field (shown in inset for constant barrier width of ) accounting for the distribution of the electric field between the well and barrier layers, and (c) the maximum value of built-in electric field.

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/content/aip/journal/apl/90/20/10.1063/1.2740576
2007-05-17
2014-04-25
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Barrier composition dependence of the internal electric field in ZnO∕Zn1−xMgxO quantum wells
http://aip.metastore.ingenta.com/content/aip/journal/apl/90/20/10.1063/1.2740576
10.1063/1.2740576
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