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Blue-light emission from quantum dots
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10.1063/1.2841825
/content/aip/journal/apl/92/5/10.1063/1.2841825
http://aip.metastore.ingenta.com/content/aip/journal/apl/92/5/10.1063/1.2841825
View: Figures

Figures

Image of FIG. 1.
FIG. 1.

Typical atomic force microscopy images of (a) a thick layer grown on a -plane sapphire substrate and (b) GaN quantum dots formed on the layer surface after a growth interruption without ammonia.

Image of FIG. 2.
FIG. 2.

Low temperature photoluminescence spectrum of GaN quantum dots grown on (nominal GaN ML). In the inset, the photoluminescence at and room temperature has been reported for comparison. Note that the differences in the spectrum shape and the slight shift in the quantum dots emission energy between the main figure and the inset are attributed to the difference in the laser excitation power densities and wavelengths (i.e., at and at , respectively).

Image of FIG. 3.
FIG. 3.

Room temperature photoluminescence spectra of quantum dots as a function of the nominal thickness of GaN (from 8 to 16 ML). The samples were excited by an unfocused HeCd laser . The dotted line is a guide for the eyes.

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/content/aip/journal/apl/92/5/10.1063/1.2841825
2008-02-07
2014-04-24
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Blue-light emission from GaN∕Al0.5Ga0.5N quantum dots
http://aip.metastore.ingenta.com/content/aip/journal/apl/92/5/10.1063/1.2841825
10.1063/1.2841825
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