Fig. 2: Dynamic emission properties.
From: Full-color-tunable phosphorescence of antimony-doped lead halide single crystal
Pseudo color map of excitation-wavelength-dependent PL emission of Pb-Br (a) and Pb-Br: Sb (b) at room temperature. c Excitation-wavelength-dependent ratio of I670 nm to I470 nm in Pb-Br: Sb. Inset shows the CIE coordinates for emission spectra in (b), and the optical images of Pb-Br: Sb power excited at (i) 360, (ii) 370, (iii) 380 and (iv) 400 nm. d Pseudo color map of temperature-dependent PL emission of Pb-Br: Sb, and the optical images of 365-nm-excited Pb-Br: Sb at (i) 300, (ii) 200, (iii) 180 and (iv) 80 K. e PLE spectra of Pb-Br: Sb at 300 K and 395 K. f Steady state PL emission spectra of 365-nm-excited Pb-Br: Sb at 300 K and 395 K. g Comparison of PXRD pattern of 395 K-annealed Pb-Br: Sb and the high-temperature phase of Pb-Br. h A schematic view of Sb3+-doped (C10NH22)9[Pb3Br11][PbBr4]2 crystal structure. i Pseudo color map of excitation-wavelength-dependent PL emission of 395 K-annealed Pb-Br: Sb. Inset is the optical images of 395 K-annealed Pb-Br: Sb under excitation at (i) 360, (ii) 400 and (iv) 420 nm. (j) Excitation-wavelength-dependent CIE coordinates and emission intensity ratio of 730/545 nm in fresh 395-K-annealed Pb-Br: Sb.
