RESEARCH / A0110
Next-Generation Short-Wave Infrared LED Phosphors Based on Chromium Doped Rare Earth Sulfides
Read the original paper · 10.1002/adma.73305 ↗
Source figures may contain other techniques and soft X-ray spectra. C, N and O measurements are outside our current hard-XAFS testing range.
FIGURE 1 Crystal structures and micromorphology. (a) XRD patterns of NaLnS2 (Ln = Lu, Y, Gd) and magnified XRD patterns from 31◦to 33◦. (b) Crystal structure of NaLnS2 (Ln = Lu, Y, Gd). (c) The unit cell parameters change diagram of Ln - cation substitution in NaLnS2 (Ln = Lu, Y, Gd). (d) Cr K-edge XANES spectra of NaLnS2: 0.02Cr3+ (Ln = Lu, Y, Gd). (e) Corresponding FT-EXAFS spectra of the NaLuS2: 0.02Cr3+. (f) EPR spectra of NaLnS2: 0.02Cr3+ (Ln = Lu, Y, Gd) samples recorded at room temperature.