Fig. 2: Morphological, structural, and compositional characterization of NaMgF3:Yb/Er (Yb/Er = 4/1 mol%) (NMF-H-X) nanocrystals (NCs) with and without interstitial H+-doping. | Nature Communications

Fig. 2: Morphological, structural, and compositional characterization of NaMgF3:Yb/Er (Yb/Er = 4/1 mol%) (NMF-H-X) nanocrystals (NCs) with and without interstitial H+-doping.

From: Proof of crystal-field-perturbation-enhanced luminescence of lanthanide-doped nanocrystals through interstitial H+ doping

Fig. 2

a Transmission electron microscopy (TEM) images and b high-resolution X-ray diffraction (XRD) patterns of the NMF-H-X NCs with and without interstitial H+-doping as a function of the nominal amount of acetic acid (HAc) used in the synthetic procedure (X = 0–14.7 mmol, the color bar from dark red to bright yellow in a represents an increase in the nominal addition of HAc). The NC sizes are listed at the bottom of each panel in a. The middle and right panels of b show the enlarged angular region of 46.2°–48.5° and the cell volumes, respectively. c, High-angle annular dark-field-scanning transmission electron microscopy (HAADF-STEM) image of randomly selected NMF-H-3.1 NCs and corresponding two-dimensional energy-dispersive X-ray spectroscopy (EDS) elemental mapping images of Na, Mg, F, Yb, and Er. Scale bars in a and c: 50 nm. Source data are provided as a Source Data file.

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