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Development of high-performance, hyperfluorescence OLEDs for use in display applications and solid state lighting

Leistungen

Promotional material

Material for publicity and promotion including a project leaflet, a poster, a powerpoint presentation and a short film.

Project website

A project website will be designed, including an external facing website and an internal facing secure cloud storage.

Report on deep blue OLED using stable TADF and efficiently shielded fluorescent emitter

Study about the performance of the best material combination/OLED stack discovered in the project for deep blue emission.

Report on performance of reference system in optimised OLED Stack

Study the performance of the reference material system for comparison analysis. Supply the reference materials in sufficient quantity and OLED quality to the consortium.

Report on final performance analysis of consortium OLED materials

Analysis of the performance and key learning for all the materials developed in the project and define potential field of application.

Summary of TADF host properties

The photophysical and energetic properties of a selected number of TADF host materials will be reported.

Summary of energy transfer from the TADF host to the shielded emitter

The scientific findings from the investigation of energy transfer between TADF host and fluorescent emitter will be summarised.

Summary report on effects of donor substituents

The most significant impacts of donor substituents on the photophysical properties of TADF Host materials will be summarised.

Summary of strategies for large batch synthesis

One of the aspects of WP2 is the synthesis of larger batches of TADF host materials. In this deliverable, a summary of different investigated synthetic strategies will be given.

Comparison of measured and calculated emission characteristics of emissive core structures.

One central part of WP1 is to find new, small emissive core structures for the shielded emitters. For the efficient design and choice of these structures, calculations of emitting properties on a large number of Arenes will be carried out. This deliverable will report on the comparison between these calculations and measurements of selected synthesised cores.

Model of energy transfer available

Model to simulate energy transfer inside an OLED, based on transition rates for emission, energy transfer, and non-radiative deactivation while taking into account the Purcell effect inside the anisotropic OLED as well as donor / acceptor orientation distributions.

Revised emitter characterisation set-up

Analysis and comparison of different emitting systems e.g. fluorophores, phosphors, TADF, shielded emitters.

Report on high-brightness microdisplay demonstrator

Prototyping of a microdisplay demonstrator with high-brightness

Veröffentlichungen

Effect of matrix anisotropy on the apparent emitter orientation in Organic LED

Autoren: Norbert Danz, Nils Haase, Antonia Morherr, Christof Pflumm, Birk Fritsch, Dirk Michaelis
Veröffentlicht in: Organic Electronics and Photonics: Fundamentals and Devices, 2018, Page(s) 28, ISBN 9781-510619012
Herausgeber: SPIE
DOI: 10.1117/12.2306408

Bond Rotations and Heteroatom Effects in Donor–Acceptor–Donor Molecules: Implications for Thermally Activated Delayed Fluorescence and Room Temperature Phosphorescence

Autoren: Jonathan S. Ward, Roberto S. Nobuyasu, Mark A. Fox, Andrei S. Batsanov, Jose Santos, Fernando B. Dias, Martin R. Bryce
Veröffentlicht in: The Journal of Organic Chemistry, Issue 83/23, 2018, Page(s) 14431-14442, ISSN 0022-3263
Herausgeber: American Chemical Society
DOI: 10.1021/acs.joc.8b02187

Identifying the Factors That Lead to PLQY Enhancement in Diluted TADF Exciplexes Based on Carbazole Donors

Autoren: Marco Colella, Andrew Danos, Andrew P. Monkman
Veröffentlicht in: The Journal of Physical Chemistry C, Issue 123/28, 2019, Page(s) 17318-17324, ISSN 1932-7447
Herausgeber: American Chemical Society
DOI: 10.1021/acs.jpcc.9b03538

Molecular Design Strategies for Color Tuning of Blue TADF Emitters

Autoren: Patrycja Stachelek, Jonathan S. Ward, Paloma L. dos Santos, Andrew Danos, Marco Colella, Nils Haase, Samuel J. Raynes, Andrei S. Batsanov, Martin R. Bryce, Andrew P. Monkman
Veröffentlicht in: ACS Applied Materials & Interfaces, Issue 11/30, 2019, Page(s) 27125-27133, ISSN 1944-8244
Herausgeber: American Chemical Society
DOI: 10.1021/acsami.9b06364

Electroabsorption Spectroscopy as a Tool for Probing Charge Transfer and State Mixing in Thermally Activated Delayed Fluorescence Emitters

Autoren: Daniel de Sa Pereira, Christopher Menelaou, Andrew Danos, Christel Marian, Andrew P. Monkman
Veröffentlicht in: The Journal of Physical Chemistry Letters, Issue 10/12, 2019, Page(s) 3205-3211, ISSN 1948-7185
Herausgeber: American Chemical Society
DOI: 10.1021/acs.jpclett.9b00999

Balancing charge-transfer strength and triplet states for deep-blue thermally activated delayed fluorescence with an unconventional electron rich dibenzothiophene acceptor

Autoren: Rongjuan Huang, Nadzeya A. Kukhta, Jonathan S. Ward, Andrew Danos, Andrei S. Batsanov, Martin R. Bryce, Fernando B. Dias
Veröffentlicht in: Journal of Materials Chemistry C, Issue 7/42, 2019, Page(s) 13224-13234, ISSN 2050-7534
Herausgeber: Royal Society of Chemistry
DOI: 10.1039/c9tc02175b

Less Is More: Dilution Enhances Optical and Electrical Performance of a TADF Exciplex

Autoren: Marco Colella, Andrew Danos, Andrew P. Monkman
Veröffentlicht in: The Journal of Physical Chemistry Letters, Issue 10/4, 2019, Page(s) 793-798, ISSN 1948-7185
Herausgeber: American Chemical Society
DOI: 10.1021/acs.jpclett.8b03646

Kinetic Modeling of Transient Photoluminescence from Thermally Activated Delayed Fluorescence

Autoren: Nils Haase, Andrew Danos, Christof Pflumm, Antonia Morherr, Patrycja Stachelek, Amel Mekic, Wolfgang Brütting, Andrew P. Monkman
Veröffentlicht in: The Journal of Physical Chemistry C, Issue 122/51, 2018, Page(s) 29173-29179, ISSN 1932-7447
Herausgeber: American Chemical Society
DOI: 10.1021/acs.jpcc.8b11020

Persistent Dimer Emission in Thermally Activated Delayed Fluorescence Materials

Autoren: Marc K. Etherington, Nadzeya A. Kukhta, Heather F. Higginbotham, Andrew Danos, Aisha N. Bismillah, David R. Graves, Paul R. McGonigal, Nils Haase, Antonia Morherr, Andrei S. Batsanov, Christof Pflumm, Vandana Bhalla, Martin R. Bryce, Andrew P. Monkman
Veröffentlicht in: The Journal of Physical Chemistry C, Issue 123/17, 2019, Page(s) 11109-11117, ISSN 1932-7447
Herausgeber: American Chemical Society
DOI: 10.1021/acs.jpcc.9b01458

Revealing resonance effects and intramolecular dipole interactions in the positional isomers of benzonitrile-core thermally activated delayed fluorescence materials

Autoren: Nadzeya A. Kukhta, Heather F. Higginbotham, Tomas Matulaitis, Andrew Danos, Aisha N. Bismillah, Nils Haase, Marc K. Etherington, Dmitry S. Yufit, Paul R. McGonigal, Juozas Vidas Gražulevičius, Andrew P. Monkman
Veröffentlicht in: Journal of Materials Chemistry C, Issue 7/30, 2019, Page(s) 9184-9194, ISSN 2050-7534
Herausgeber: Royal Society of Chemistry
DOI: 10.1039/c9tc02742d

Impact of Methoxy Substituents on Thermally Activated Delayed Fluorescence and Room-Temperature Phosphorescence in All-Organic Donor–Acceptor Systems

Autoren: Jonathan S. Ward, Roberto S. Nobuyasu, Mark A. Fox, Juan A. Aguilar, David Hall, Andrei S. Batsanov, Zhongjie Ren, Fernando B. Dias, Martin R. Bryce
Veröffentlicht in: The Journal of Organic Chemistry, Issue 84/7, 2019, Page(s) 3801-3816, ISSN 0022-3263
Herausgeber: American Chemical Society
DOI: 10.1021/acs.joc.8b02848

Achieving Conformational Control in Room-Temperature Phosphorescence and Thermally Activated Delayed Fluorescence Emitters by Functionalization of the Central Core

Autoren: Nadzeya A. Kukhta, Rongjuan Huang, Andrei S. Batsanov, Martin R. Bryce, Fernando B. Dias
Veröffentlicht in: The Journal of Physical Chemistry C, Issue 123/43, 2019, Page(s) 26536-26546, ISSN 1932-7447
Herausgeber: American Chemical Society
DOI: 10.1021/acs.jpcc.9b08238

The influence of molecular geometry on the efficiency of thermally activated delayed fluorescence

Autoren: Roberto S. Nobuyasu, Jonathan S. Ward, Jamie Gibson, Beth A. Laidlaw, Zhongjie Ren, Przemyslaw Data, Andrei S. Batsanov, Thomas J. Penfold, Martin R. Bryce, Fernando B. Dias
Veröffentlicht in: Journal of Materials Chemistry C, Issue 7/22, 2019, Page(s) 6672-6684, ISSN 2050-7534
Herausgeber: Royal Society of Chemistry
DOI: 10.1039/c9tc00720b

Delayed Blue Fluorescence via Upper-Triplet State Crossing from C–C Bonded Donor–Acceptor Charge Transfer Molecules with Azatriangulene Cores

Autoren: Jonathan S. Ward, Nadzeya A. Kukhta, Paloma L. dos Santos, Daniel G. Congrave, Andrei S. Batsanov, Andrew P. Monkman, Martin R. Bryce
Veröffentlicht in: Chemistry of Materials, Issue 31/17, 2018, Page(s) 6684-6695, ISSN 0897-4756
Herausgeber: American Chemical Society
DOI: 10.1021/acs.chemmater.9b01184

Importance of Chromophore Rigidity on the Efficiency of Blue Thermally Activated Delayed Fluorescence Emitters

Autoren: Nadzeya A. Kukhta, Andrei S. Batsanov, Martin R. Bryce, Andrew P. Monkman
Veröffentlicht in: The Journal of Physical Chemistry C, Issue 122/50, 2018, Page(s) 28564-28575, ISSN 1932-7447
Herausgeber: American Chemical Society
DOI: 10.1021/acs.jpcc.8b10867

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