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
Monkman A
(2022)
Why Do We Still Need a Stable Long Lifetime Deep Blue OLED Emitter?
in ACS applied materials & interfaces
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
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)
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)
Marchi Luciano H
(2023)
Room Temperature Phosphorescence in Solution from Thiophene-Bridged Triply Donor-Substituted Tristriazolotriazines.
in Chemistry (Weinheim an der Bergstrasse, Germany)
Paredis S
(2023)
Balanced Energy Gaps as a Key Design Rule for Solution-Phase Organic Room Temperature Phosphorescence
in Chemistry - A European Journal
| 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 |