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Structural design of AlN/GaN superlattices for deep-ultraviolet light-emitting diodes with high emission efficiency
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10.1063/1.3651335
/content/aip/journal/apl/99/15/10.1063/1.3651335
http://aip.metastore.ingenta.com/content/aip/journal/apl/99/15/10.1063/1.3651335
View: Figures

Figures

Image of FIG. 1.
FIG. 1.

Interband optical momentum matrix elements of an AlN/GaN superlattice as a function of GaN monolayer thickness, calculated at the Γ point between the highest valence band and the lowest conduction band. All the values are normalized to the square value of the momentum matrix element for GaN bulk. The and denote the components that are perpendicular and parallel to the c-axis, respectively.

Image of FIG. 2.
FIG. 2.

Energy gap of AlN/GaN superlattice as a function of GaN monolayer-thickness.

Image of FIG. 3.
FIG. 3.

Energy band structure around the Γ point of the (a) (AlN)20/(GaN)0 and (b) (AlN)19/(GaN)1 superlattices. Energies are measured from the valence band top at the Γ point.

Image of FIG. 4.
FIG. 4.

(Color online) Isosurfaces of the wavefunctions in the (a) lowest conduction band, (b) HH band, (c) LH band, and (d) CH band at the Γ point in the (AlN)19/(GaN)1 superlattices. The isovalues are ±1.08 (e3). Spheres represent Ga atoms.

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/content/aip/journal/apl/99/15/10.1063/1.3651335
2011-10-12
2014-04-18
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Structural design of AlN/GaN superlattices for deep-ultraviolet light-emitting diodes with high emission efficiency
http://aip.metastore.ingenta.com/content/aip/journal/apl/99/15/10.1063/1.3651335
10.1063/1.3651335
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