Fig. 3: Proposed mechanism for the thermally activated organic afterglow.
From: Thermally activated triplet exciton release for highly efficient tri-mode organic afterglow
a Temperature-dependent afterglow spectra from 80 to 300 K of DCzB crystal. b Lifetimes of 475, 495, and 525 nm afterglow at different temperatures. c CIE 1931 coordinates of steady-state PL and afterglow emission from 80 to 300 K. d HOMO and LUMO isosurfaces of DCzB in single molecular and dimer states. e TD-DFT calculated energy level diagram and the corresponding SOC constants. f QM/MM model of DCzB molecule, the hydrogen atoms were ignored for clarity. g Molecular packing and inter/intra-molecular interactions in DCzB crystal. h Proposed mechanism of the highly efficient tri-mode afterglow. The excitation wavelength is at 380 nm. Source data are provided as a “Source Data file”.
