A photophysical dataset of coal-derived fluorescent carbon dots

The optimal excitation and emission wavelengths, full width at half maximum, quantum yield, and fluorescence lifetime were determined using photoluminescence, photoluminescence excitation, ultraviolet-visible absorption spectroscopy absorption, integrating sphere, and time-resolved fluorescence measurements.

In addition, the Stokes shift, photon energy, Tauc-derived apparent direct optical gap, and transition rate constants were calculated. The associated experimental conditions, raw data, and derived parameters provide a data basis for comparing and optimizing the performance of coal-derived fluorescent CDs.