HOW TO USE PHOTOPHYSICS TO MAKE A BETTER DISPLAY

A. P. Monkman (Pq); University of Durham

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Trabalho

Título do Trabalho

HOW TO USE PHOTOPHYSICS TO MAKE A BETTER DISPLAY

Autores

A. P. Monkman (Pq); University of Durham

Modalidade

Invited

Área temática

Dispositivos optoeletrônicos

Data de Publicação

27/05/2026

País da Publicação

Brasil

Idioma da Publicação

pt-BR

Página do Trabalho

https://www.even3.com.br/anais/workshop-do-ineo-2026/1512865-how-to-use-photophysics-to-make-a-better-display

ISBN

978-65-272-2467-9

Palavras-Chave

Photophysics, Displays

Resumo

Organic Light Emitting Diodes, OLEDs, are now a common feature in mobile phones, laptops and televisions. Light generation by electroluminescence in the best OLEDs can have 100% internal charge to photon conversion efficiency. This requires very efficient triplet to singlet excited state harvesting, and has been the strict preserve of electrophosphorescence heavy metal complex emitters until now. However, recently it has been discovered that all organic, donor-acceptor (DA) charge transfer molecules can also yield such efficient triplet harvesting and OLEDS with 100% internal efficiency can be fabricated. Here the process of triplet harvesting is by thermally activated delayed fluorescence, ‘TADF’, i.e. E-type delayed fluorescence, and in this overview, I shall elucidate on the triplet harvesting mechanism and how it can be controlled by molecular architecture. Starting from the photophysical measurements of intramolecular charge transfer (ICT) states,1 focusing on temperature dependent time resolved emission, delayed emission and phosphorescence I will show how we have understood the reverse intersystem crossing mechanism (rISC),2 and through dynamic quantum chemical modelling, how vibronic coupling drives spin orbit coupling.3 Finally, I will show how narrow line width, fully saturated deep blue TADF OLEDs reaching 30% external quantum efficiency can be fabricated and how these will be used in a new panel architecture in the next generation of high resolution OLED displays that only use blue emitting pixels! References 1. Dias, F. B. et al. The Role of Local Triplet Excited States in Thermally-Activated Delayed Fluorescence: Photophysics and Devices. Adv. Sci. 3, 1600080 (2016). 2. Etherington, M. K., Gibson, J., Higginbotham, H. F., Penfold, T. J. & Monkman, A. P. Revealing the spin-vibronic coupling mechanism of thermally activated delayed fluorescence. Nat Commun 7, 13680 (2016). 3. Gibson, J., Monkman, A. P. & Penfold, T. J. The Importance of Vibronic Coupling for Efficient Reverse Intersystem Crossing in Thermally Activated Delayed Fluorescence Molecules. ChemPhysChem 1–7 (2016). doi:10.1002/cphc.201600662

Título do Evento: Workshop do INEO 2026
Cidade do Evento: Nazaré Paulista
Título dos Anais do Evento: Anais do Workshop do INEO 2026
Nome da Editora: Even3
Meio de Divulgação: Meio Digital

Como citar

DURHAM, A. P. Monkman (Pq); University of. HOW TO USE PHOTOPHYSICS TO MAKE A BETTER DISPLAY.. In: Anais do Workshop do INEO 2026. Anais...Nazaré Paulista(SP) Hotel Estância Atibainha, 2026. Disponível em: https//www.even3.com.br/anais/workshop-do-ineo-2026/1512865-HOW-TO-USE-PHOTOPHYSICS-TO-MAKE-A-BETTER-DISPLAY. Acesso em: 11/09/2026