The HyperOLED consortium recently included a new feature to our project website, the "Summary of Achievements" available in the Publications section. With this recent addition to the project website we are aiming to inform the scientific and industrial communities about the latest project results in a way even the general public can understand what Hyperfluorescence is about.

We already prepared few summaries and more will come soon. Our latest "Summary of Achievements" is presented below:

Dimers are forever!

Is the emission colour of your OLED devices changing with increasing emitter concentration? Do you think it could be intermolecular interactions? The HyperOLED consortium has recently shown that dimerization and aggregates are the main bugbears spoiling emission colour purity of the original TADF molecule, 4CzIPN, and its analogues. We have shown that these intermolecular interactions cause a significant red shift in the photoluminescence and electroluminescence of 4CzIPN-based films and devices. These results mean that a lot of existing literature on these compounds needs to be reassessed and future synthetic design needs to consider the molecule's propensity to form aggregates, as this now directly affects commercial viability.

Pictures courtesy of the University of Durham (UK)