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Some thermally activated delayed fluorescence (TADF) emitters have a propensity to form aggregate species. This can create challenges for device fabrication but also makes photophysical analysis and interpretation extremely complex. Recently I have led three studies into how best to probe this behaviour to create a characterization framework that can expose whether a TADF compound is susceptible to aggregation. Starting from this trilogy of work I will introduce two ongoing studies. These studies further contribute to the wider discussion in the field regarding intermolecular interactions and highlight the challenges ahead as distinguishing between monomer and aggregate species becomes harder.
Marc K. Etherington
"Intermolecular interactions in thermally activated delayed fluorescence emitters (Conference Presentation)", Proc. SPIE PC12208, Organic and Hybrid Light Emitting Materials and Devices XXVI, PC122080T (3 October 2022); https://doi.org/10.1117/12.2633933
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Marc K. Etherington, "Intermolecular interactions in thermally activated delayed fluorescence emitters (Conference Presentation)," Proc. SPIE PC12208, Organic and Hybrid Light Emitting Materials and Devices XXVI, PC122080T (3 October 2022); https://doi.org/10.1117/12.2633933