Fig. 4: Time-resolved spectra investigations of the doped TBP-3MCz, TBP-DMAc, and TBP-3aDMAc host-guest systems.

a Comparison of the steady-state PL spectra, prompt fluorescence spectra (0–500 ns), and delayed fluorescence spectra (>1 μs). b Time-resolved PL spectra of the delayed components after solid-state solvent stabilization and prompt fluorescence emission. c Time-resolved EL spectra of the OLED devices based on the host-guest systems (measured with pulse voltage of 6 V and duration of 300 ns), PF denotes prompt fluorescence. Source data are provided as a Source Data file.