Extended Data Fig. 2: Persistent luminescence images of various Ln-PLNPs in the visible-NIR region.
From: X-ray-activated persistent luminescence nanomaterials for NIR-II imaging
a, PL images of centrifuge tubes, filled with hexagonal Er-PLNPs (NaYF4:3%Er@NaYF4), Nd-PLNPs (NaYF4:1%Nd@NaYF4), Ho-PLNPs (NaYF4:1%Ho@NaYF4), and Tm-PLNPs (NaYF4:1%Tm@NaYF4), recorded at different emission bands. b, c, d, Corresponding long-lasting properties of Er-PLNPs, Nd-PLNPs, Ho-PLNPs, and Tm-PLNPs in the VIS emission bands (b), and NIR-II emission bands (c, d) shown in a. bg: background, ROI: region of interest. e, Corresponding NIR-II PL signal intensities of Er-PLNPs, Nd-PLNPs, Ho-PLNPs, and Tm-PLNPs shown in d (n = the number of pixels within the corresponding ROI). Imaging exposure time for VIS and NIR-II images are 1 s and 5 s, respectively. The data are shown as the mean ± s.d.
