1887
banner image
No data available.
Please log in to see this content.
You have no subscription access to this content.
No metrics data to plot.
The attempt to load metrics for this article has failed.
The attempt to plot a graph for these metrics has failed.
Crystal structure and optical characterization of heterostructured GaAs/AlGaAs/GaAs nanowires
Rent:
Rent this article for
USD
10.1063/1.4803494
/content/aip/journal/jap/113/16/10.1063/1.4803494
http://aip.metastore.ingenta.com/content/aip/journal/jap/113/16/10.1063/1.4803494

Figures

Image of FIG. 1.
FIG. 1.

Scanning electron microscopy image of heterostructured GaAs/Al03 As/GaAs core/inner shell/outer shell nanowires.

Image of FIG. 2.
FIG. 2.

Compositional profiles of the heterostructured nanowire with thin tunneling transparent barrier obtained by energy-dispersive x-ray spectroscopy measurements. Blue, green, and red lines correspond to As, Ga, and Al, respectively. The scale bar is 50 nm.

Image of FIG. 3.
FIG. 3.

High-resolution transmission electron microscopy image of the heterostructured nanowire. The WZ and ZB segments are indicated.

Image of FIG. 4.
FIG. 4.

Raman spectra measured at the temperature 10 K in heterostructured GaAs/Al03Ga0.7As/GaAs core/inner shell/outer shell nanowires. Types of vibrational modes are labeled according to the text.

Image of FIG. 5.
FIG. 5.

Photoluminescence spectrum measured at the temperature 1.6 K in heterostructured GaAs/Al03Ga0.7As/GaAs core/inner shell/outer shell nanowires. Types of optical transitions are labeled according to Fig. 6 .

Image of FIG. 6.
FIG. 6.

Schematic representation of the energy structure of heterostructured GaAs/Al03Ga0.7As/GaAs core/inner shell/outer shell nanowires. Full and dashed lines are for zincblende and wurtzite segments. The energy levels shown represent the electrons accumulated in the center of the GaAs core and at the heterointerface between the outer GaAs shell and the Al03Ga0.7As inner shell, as well as the holes accumulated at the heterointerface between the GaAs core and the AlGaAs inner shell. Red arrows show electron transitions contributing to the photoluminescence.

Tables

Generic image for table
Table I.

Characteristic energies of optical transitions observed in GaAs/AlGaAs/GaAs core/inner shell/outer shell nanowires.

Loading

Article metrics loading...

/content/aip/journal/jap/113/16/10.1063/1.4803494
2013-04-30
2014-04-19
Loading

Full text loading...

This is a required field
Please enter a valid email address
752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Crystal structure and optical characterization of heterostructured GaAs/AlGaAs/GaAs nanowires
http://aip.metastore.ingenta.com/content/aip/journal/jap/113/16/10.1063/1.4803494
10.1063/1.4803494
SEARCH_EXPAND_ITEM