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Room-temperature excitonic absorption in quantum wires
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10.1063/1.2135872
/content/aip/journal/apl/87/22/10.1063/1.2135872
http://aip.metastore.ingenta.com/content/aip/journal/apl/87/22/10.1063/1.2135872

Figures

Image of FIG. 1.
FIG. 1.

Schematic view of 20-wire device, where -wires are embedded in T-waveguide. Cross section of each T-wire is (stem well) (arm well). Percentages in parentheses represent Al content of .

Image of FIG. 2.
FIG. 2.

Absorption spectra of 20 wires at . Solid curve and dotted curve represent absorption spectra for arm and stem polarizations, respectively. Room-temperature 1D-excitonic absorption is observed at .

Image of FIG. 3.
FIG. 3.

Absorption spectra of 20 wires at . Solid curve and dotted curve show absorption spectrum for arm and stem polarizations, respectively.

Image of FIG. 4.
FIG. 4.

(a) Absorption spectra of 20 wires for arm polarization at , , , , , and . Each curve is plotted with offset of . (b) Measured energies of the 1D-exciton peak (dots) and the calculated band-gap energy of GaAs plus (solid curve) for various temperatures.

Tables

Generic image for table
Table I.

Comparison of structures and measured data for 20-wire and single-wire devices. Listed absorption data are for arm polarization. Peak area is evaluated as product of peak value and FWHM. Ratio is evaluated for values and .

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/content/aip/journal/apl/87/22/10.1063/1.2135872
2005-11-23
2014-04-21
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Room-temperature excitonic absorption in quantum wires
http://aip.metastore.ingenta.com/content/aip/journal/apl/87/22/10.1063/1.2135872
10.1063/1.2135872
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