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Microphotoluminescence of exciton and biexciton around from a single quantum dot
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10.1063/1.2185008
/content/aip/journal/apl/88/13/10.1063/1.2185008
http://aip.metastore.ingenta.com/content/aip/journal/apl/88/13/10.1063/1.2185008
View: Figures

Figures

Image of FIG. 1.
FIG. 1.

TEM plane view of the sample taken under 001 zone-axis bright-field condition. The QDs are diamond shaped, and present a density of . The dark contrast corresponds to the highly strained base of the QDs.

Image of FIG. 2.
FIG. 2.

(a) Close view of a single QD. It presents a slight elongation along the [1–10] direction, and the edges are oriented along the [3–10] and [1–30] directions. (b) TEM cross view of a QD. The average height of the QDs is , and the thickness of the wetting layer is . The dark contrast around the QD corresponds to the strain field surrounding the nanostructure.

Image of FIG. 3.
FIG. 3.

Standard PL spectrum of the sample recorded at with an excitation power density of .

Image of FIG. 4.
FIG. 4.

spectrum of a single QD recorded at under various excitation powers between and . The and lines correspond to the radiative recombination of the exciton and the biexciton, respectively.

Image of FIG. 5.
FIG. 5.

Power dependence of the integrated intensity of the (full circle) and (open circle) lines. Log scale in abscissa and ordinate: (full lines) fit of the experimental data with a linear (respectively, square) function of the pump power for the (respectively, ) line.

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/content/aip/journal/apl/88/13/10.1063/1.2185008
2006-03-27
2014-04-18
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Microphotoluminescence of exciton and biexciton around 1.5μm from a single InAs∕InP(001) quantum dot
http://aip.metastore.ingenta.com/content/aip/journal/apl/88/13/10.1063/1.2185008
10.1063/1.2185008
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