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Role of thin InP cap layer and anion exchange reaction on structural and optical properties of InAs quantum dots on InP (001)a)
a)No proof corrections received from author prior to publication.
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10.1116/1.1949216
/content/avs/journal/jvstb/23/4/10.1116/1.1949216
http://aip.metastore.ingenta.com/content/avs/journal/jvstb/23/4/10.1116/1.1949216

Figures

Image of FIG. 1.
FIG. 1.

Source gas switching procedures for the InAs QDs formation and the subsequent LT-InP cap layer growth: (a) the normal-capping; (b) the double capping.

Image of FIG. 2.
FIG. 2.

Evolution of PL spectrum at 77 K from the InAs QDs by changing the first cap thickness of the double-capping procedure under . The bottom spectrum is from the normal-capped sample of .

Image of FIG. 3.
FIG. 3.

Cross-sectional dark-field TEM images of the QDs grown by the normal-capping procedure of (a), and by the double-capping procedure of a 2-nm-thick first cap and .

Image of FIG. 4.
FIG. 4.

Plan-view bright-field TEM images of the QDs grown by the normal-capping procedure of (a), and by the double-capping procedure of a 2-nm-thick first cap and .

Image of FIG. 5.
FIG. 5.

Evolution of PL, spectrum at 77 K from the InAs QDs by changing the growth interruption time, , in the double-capping procedure. The thickness of the first cap is 2 nm.

Image of FIG. 6.
FIG. 6.

Evolution of PL spectrum at 77 K from the InAs QDs by changing the exposure time, , in the normal-capping procedure.

Image of FIG. 7.
FIG. 7.

Plan-view bright-field TEM images of the QDs grown by the normal-capping procedure. The exposure time is (a), (b), and (c). The markers represent 100 nm.

Tables

Generic image for table
TABLE I.

Correlations between the first cap thicknesses, and the heights of three major QD families grown by the double-capping of .

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/content/avs/journal/jvstb/23/4/10.1116/1.1949216
2005-07-25
2014-04-18
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Role of thin InP cap layer and anion exchange reaction on structural and optical properties of InAs quantum dots on InP (001)a)
http://aip.metastore.ingenta.com/content/avs/journal/jvstb/23/4/10.1116/1.1949216
10.1116/1.1949216
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