5 July 2018

The PHEBE consortium recently held its final project meeting at Durham University on 20 June 2018.

During the meeting, the partners discussed the performance test results obtained for blue TADF emitters based on phenylcarbazole organic material as well as the design of the white stack units used in the OLED lighting panel demonstrators.
Also, the meeting provided an opportunity to reflect on one of the key learning points from the project: host material selection is as critical as emitter material choice, in order to produce blue TADF emitters that demonstrate good lifetime as well as high external quantum efficiency.

Immediately following the meeting, the consortium partners were able to comprehensively disseminate their final project results in the Maximising the rISC Workshop 2018 held at Durham University during 21-22 June 2018. This workshop attracted over 100 people from a diverse range of backgrounds who came to learn and discuss the development of TADF and related research.

Senior researchers from the PHEBE consortium gave the following talks:
  • Vibrational coupling in thermally-activated delayed fluorescence, how multiple resonant energy states allow you to beat Ir triplet harvesting (Prof. Andy Monkman, Durham University)
  • Synthesis and characterisation of the new emitters for OLED applications (Dr. Ramunas Lygaitus et al, Kaunas University of Technology)
  • Ultrastable glass emission layers – a concept to improve phosphorescent OLEDs – does it work for TADF? (Prof. Sebastian Reineke et al, TU Dresden)

For copies of the talk abstracts, please see here.

Also, younger researchers from the PHEBE consortium presented their results during the poster session:
  • Blue TADF emitters relying on carbazole donors surrounding a central acceptor group (Paulius Imbrasas, TU Dresden)
  • Experimental setup of broadband impulsive vibrational spectroscopy (Chunyong Li, Durham University)
  • Investigation of Raman-active modes in an organic TADF molecule using broad-band impulsive vibrational spectroscopy (Yun Long, Durham University)
  • Isomeric Derivatives of 9,9-dimethyl-9,10-dihydroacridine and Benzonitrile (Tomas Matulaitis, Kaunas University of Technology)
  • Deconstruction of an OLED: EL transients in TADF devices (Vasco Santos, Durham University)

For copies of the poster abstracts, please see here.