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. 2020 Oct 2;6(40):eabb6772. doi: 10.1126/sciadv.abb6772

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Copyright © 2020 The Authors, some rights reserved; exclusive licensee American Association for the Advancement of Science. No claim to original U.S. Government Works. Distributed under a Creative Commons Attribution NonCommercial License 4.0 (CC BY-NC).

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Fig. 4 — (A) Photographs of w-CQDs under daylight (left) and UV light (right) (excited at 365 nm). (B) PL spectrum of w-CQDs. (C) Time-resolved PL spectrum of w-CQDs. (D) TEM image and corresponding lateral size distribution of w-CQDs. (E) High-resolution TEM image and fast Fourier transform pattern of w-CQDs. (F) AFM image and corresponding height profile of w-CQDs.