rISC - the game of strategic molecular design for high efficiency OLEDs
Lead Research Organisation:
Durham University
Department Name: Physics
Abstract
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Organisations
Publications
Stavrou K
(2024)
Key requirements for ultraefficient sensitization in hyperfluorescence organic light-emitting diodes
in Nature Photonics
Sudhakar P
(2023)
Azaborine as a Versatile Weak Donor for Thermally Activated Delayed Fluorescence.
in ACS applied materials & interfaces
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)
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)
Xiaotian R
(2023)
Carbazole-Dendronized Luminescent Radicals
in Angewandte Chemie International Edition
| 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 |