Extended Data Fig. 6: Synthesis and characterization of multilayered and codoped Ln-PLNPs.
From: X-ray-activated persistent luminescence nanomaterials for NIR-II imaging
a, Synthesis process and corresponding TEM images of multilayered Er/Nd/Ho-PLNPs. b, Electron energy-loss spectroscopy (EELS) line scan, conducted with HAADF-STEM imaging (inset) on a multilayered Er/Nd/Ho-PLNP, showing that Gd signals in different regions of the crystal are consistent with the designed multilayered structure. c, The corresponding NIR-II PL decay curves of multilayered Er/Nd/Ho-PLNPs in Er-channel, Nd-channel, and Ho-channel, respectively. d, Synthesis process and corresponding TEM images of codoped Er/Nd/Ho-PLNPs. e, The corresponding NIR-II PL decay curves of codoped Er/Nd/Ho-PLNPs in Er-channel, Nd-channel and Ho-channel, respectively. NIR-II PL decay curves were abstracted from corresponding images with 5 s exposure time.
