Figure 1 | Scientific Reports

Figure 1

From: Photoluminescence enhancement by deterministically site-controlled, vertically stacked SiGe quantum dots

Figure 1

(a, b) AFM micrographs of the un-capped samples RefA (left) and RefB (right), respectively, from the pre-patterned areas with a pit period of 340nm. The inclination maps (c) and (d) show the characteristic facets of dome-shaped dots, i.e., {15 3 23} indicated in red, {1 1 3} shown in yellow and the shallow top with a {1 0 5} facet (blue). Inset: Enlarged image of one pit with its dome-shaped QD showing the facets in higher magnification as well as the decoration of the pit sidewalls with {1 0 5}-facetted ripples (blue) and (001) terraces (white).

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