rISC - the game of strategic molecular design for high efficiency OLEDs
Lead Research Organisation:
Durham University
Department Name: Physics
Abstract
Abstracts are not currently available in GtR for all funded research. This is normally because the abstract was not required at the time of proposal submission, but may be because it included sensitive information such as personal details.
Organisations
Publications
Xiaotian R
(2023)
Carbazole-Dendronized Luminescent Radicals
in Angewandte Chemie International Edition
Wright IA
(2021)
Conformational Dependence of Triplet Energies in Rotationally Hindered N- and S-Heterocyclic Dimers: New Design and Measurement Rules for High Triplet Energy OLED Host Materials.
in Chemistry (Weinheim an der Bergstrasse, Germany)
Urban M
(2023)
TADF Invariant of Host Polarity and Ultralong Fluorescence Lifetimes in a Donor-Acceptor Emitter Featuring a Hybrid Sulfone-Triarylboron Acceptor.
in Angewandte Chemie (International ed. in English)
Sudhakar P
(2023)
Azaborine as a Versatile Weak Donor for Thermally Activated Delayed Fluorescence.
in ACS applied materials & interfaces
Stavrou K
(2023)
Unexpected Quasi-Axial Conformer in Thermally Activated Delayed Fluorescence DMAC-TRZ, Pushing Green OLEDs to Blue
in Advanced Functional Materials
Stavrou K
(2024)
Key requirements for ultraefficient sensitization in hyperfluorescence organic light-emitting diodes
in Nature Photonics
Sem S
(2022)
Determining non-radiative decay rates in TADF compounds using coupled transient and steady state optical data
in Journal of Materials Chemistry C
Phan Huu DKA
(2022)
Thermally Activated Delayed Fluorescence: Polarity, Rigidity, and Disorder in Condensed Phases.
in Journal of the American Chemical Society
Description | From initial work we had shown that uncontrolled molecular conformations lead to very inhomogeneous rates of reverse intersystem crossing which causes fast and slow triplet harvesting leading to poor efficiency and major problems on OLED devices. By using molecules that have locked configurations we remove this problem and can now demonstrate far more efficent OLEDs with stable colour emission and longer lifetime. Two ways to achieve this have been found. This is a major step forward for TADF OLEDs. |
Exploitation Route | We are working with two leading major International OLED companies and aim to introduce these new materials into our work with them to take our findings further. |
Sectors | Electronics |