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Optical properties of patterned InAs quantum dot ensembles grown on GaAs nanopyramids
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10.1063/1.2821121
/content/aip/journal/apl/91/24/10.1063/1.2821121
http://aip.metastore.ingenta.com/content/aip/journal/apl/91/24/10.1063/1.2821121
View: Figures

Figures

Image of FIG. 1.
FIG. 1.

(Color online) (a) SEM image of the PQD clusters of sample A. (b) Higher resolution SEM image of PQDs on single pyramid. (c) Height profile of one PQD cluster, as shown in (b). (d) SEM image of the PQD pairs of sample B. (e) Higher resolution SEM image of one PQD pair on single pyramid. (f) Height profile of the PQD pair, as shown in (d).

Image of FIG. 2.
FIG. 2.

(Color online) Low temperature PL spectra obtained with a laser excitation intensity of for samples A and B.

Image of FIG. 3.
FIG. 3.

(Color online) (a) Integrated PL intensity as a function of excitation intensity. The solid lines are linear fitting results. (b) PL FWHM as a function of excitation intensity. (As it is always in this paper, the lines that connected the experimental data points are added only for the guidance of eyes.). Spectra profile as a function of excitation intensity for (c) sample A and (d) sample B.

Image of FIG. 4.
FIG. 4.

(Color online) (a) PL Peak energy as a function of temperature, the solid curves are the fitting results according to Varshni law. (b) PL FWHM as a function of temperature.

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/content/aip/journal/apl/91/24/10.1063/1.2821121
2007-12-11
2014-04-19
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Optical properties of patterned InAs quantum dot ensembles grown on GaAs nanopyramids
http://aip.metastore.ingenta.com/content/aip/journal/apl/91/24/10.1063/1.2821121
10.1063/1.2821121
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