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. 2020 Oct 29;11:5471. doi: 10.1038/s41467-020-19337-0

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© The Author(s) 2020

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Fig. 4 — a, b Absorption spectra of the CdTe quantum dot multilayers with a low and b high in-plane quantum dot density (σ_in-plane). c Optical density of the absorption peak of the multilayers (OD_multi) versus the number of layers (n). The dashed lines are proportional to n, which show that the OD_multi are proportional to n. d Absorption peak energy of the multilayers versus n.