Although exciplex-forming systems are widely used for fabricating organic light-emitting diodes (OLEDs), their structural and thermodynamic characterization is limited. Now donor/acceptor inclusion complexes that demonstrate thermally activated delayed fluorescence have been generated. Their cocrystal structures have been resolved and the thermodynamics of exciplex formation determined, which has enabled the fabrication of efficient OLEDs.
- Chun-Yen Lin
- Chao-Hsien Hsu
- Pi-Tai Chou