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AFM images of three samples grown at different growth rates. (a) 0.015 ML/s . (b) 0.006 ML/s . [(c)–(d)] 0.01 ML/s .
emission for sample Fig. 1(a). (a) The sharp peaks 650–710 nm shows resolvable QD density. The peak at 645 nm is due to the InP wetting layer (grating:150). (b) Sharp features of single QD with 0.1 nm FWHM are resolved (exposure time: 2s, temperature: 4 K, NA:0.7).
(a) Saturation curve for single QD on sample Fig. 1(b). (b) Single QD emission with excitation power.
Density of QDs with different InP growth rates.
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