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
Danos A
(2022)
Not the sum of their parts: understanding multi-donor interactions in symmetric and asymmetric TADF emitters
in Journal of Materials Chemistry C
Franca L
(2022)
Spiro donor-acceptor TADF emitters: naked TADF free from inhomogeneity caused by donor acceptor bridge bond disorder. Fast rISC and invariant photophysics in solid state hosts
in Journal of Materials Chemistry C
Franca LG
(2023)
Donor, Acceptor, and Molecular Charge Transfer Emission All in One Molecule.
in The journal of physical chemistry letters
Franca LG
(2024)
Exploring the Early Time Behavior of the Excited States of an Archetype Thermally Activated Delayed Fluorescence Molecule.
in The journal of physical chemistry letters
Hempe M
(2021)
Vibrational Damping Reveals Vibronic Coupling in Thermally Activated Delayed Fluorescence Materials.
in Chemistry of materials : a publication of the American Chemical Society
Kelly D
(2022)
Laplace Transform Fitting as a Tool To Uncover Distributions of Reverse Intersystem Crossing Rates in TADF Systems.
in The journal of physical chemistry letters
Levermore P
(2023)
9-2: TurboLED: Novel Pixel Design for Reduced Power Consumption and Expanded Color Gamut
in SID Symposium Digest of Technical Papers
Marchi Luciano H
(2023)
Room Temperature Phosphorescence in Solution from Thiophene-Bridged Triply Donor-Substituted Tristriazolotriazines.
in Chemistry (Weinheim an der Bergstrasse, Germany)
Miranda-Salinas H
(2024)
Peripheral halogen atoms in multi-resonant thermally activated delayed fluorescence emitters: the role of heavy atoms in intermolecular interactions and spin orbit coupling
in Journal of Materials Chemistry C
| 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 |