Time-Dependent Afterglow from a Single Component Organic Luminogen
Photophysical properties of BEU crystals. (a) Photographs of BEU single-crystals taken with 312 UV light or after ceasing the irradiation at different time points. (b) Prompt emission spectra () of BEU crystals with varying values. (c) Time-dependent afterglow mapping of BEU crystals at room temperature (). (d) Prompt emission and delayed emission spectra with different delayed time (). (e) Graphic illustration of the different recorded afterglow colors in the CIE diagram.