Journal
JOURNAL OF MATERIALS CHEMISTRY C
Volume 6, Issue 39, Pages 10557-10568Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/c8tc03390k
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Funding
- European Union's Horizon 2020 research and innovation programme under the Marie Sklodowska-Curie grant [H2020-MSCA-ITN-2015/674990]
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Here, we discuss the influence of the crystal structure on the photophysical properties of two new TADF emitters containing a non-planar helical moiety. The presence of solvent in the crystal lattice of a diaza[5]helicene-based compound alters molecular packing significantly and suppresses aggregation. This results in more intense TADF emission and an increase in PLQY. Solution-processed OLED devices gave a maximum external quantum efficiency of 7.1%.
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