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- Title
Thermally Activated Delayed Fluorescence in a Y<sub>3</sub>N@C<sub>80</sub> Endohedral Fullerene: Time-Resolved Luminescence and EPR Studies.
- Authors
Zalibera, Michal; Krylov, Denis S.; Karagiannis, Dimitrios; Will, Paul‐Anton; Ziegs, Frank; Schiemenz, Sandra; Lubitz, Wolfgang; Reineke, Sebastian; Savitsky, Anton; Popov, Alexey A.
- Abstract
The endohedral fullerene Y3N@C80 exhibits luminescence with reasonable quantum yield and extraordinary long lifetime. By variable-temperature steady-state and time-resolved luminescence spectroscopy, it is demonstrated that above 60 K the Y3N@C80 exhibits thermally activated delayed fluorescence with maximum emission at 120 K and a negligible prompt fluorescence. Below 60 K, a phosphorescence with a lifetime of 192±1 ms is observed. Spin distribution and dynamics in the triplet excited state is investigated with X- and W-band EPR and ENDOR spectroscopies and DFT computations. Finally, electroluminescence of the Y3N@C80/PFO film is demonstrated opening the possibility for red-emitting fullerene-based organic light-emitting diodes (OLEDs).
- Subjects
MOLECULAR spectra; FULLERENES; GRAPHENE synthesis; EXCITED states; ORGANIC light emitting diodes; TIME-resolved spectroscopy
- Publication
Angewandte Chemie, 2018, Vol 130, Issue 1, p283
- ISSN
0044-8249
- Publication type
Article
- DOI
10.1002/ange.201710637