Results 41 to 50 of about 13,406 (265)

Open questions on the photophysics of thermally activated delayed fluorescence

Communications Chemistry, 2021
The process of thermally activated delayed fluorescence (TADF) converts non-radiative triplet states into emissive singlet states. Herein we outline the fundamentals of TADF, some of the recent progress in understanding the key material properties ...
Julien Eng, Thomas J. Penfold
doaj   +1 more source

Introducing MR‐TADF Emitters into Light‐Emitting Electrochemical Cells for Narrowband and Efficient Emission

Advanced Functional Materials, 2023
Organic semiconductors that emit by the process of multi‐resonance thermally activated delayed fluorescence (MR‐TADF) can deliver narrowband and efficient electroluminescence while being processable from solvents and metal‐free.
Shi Tang, J. M. dos Santos, Joan Ràfols‐Ribé, Jia Wang, E. Zysman‐Colman, L. Edman   +5 more
semanticscholar   +1 more source

Room temperature triplet state spectroscopy of organic semiconductors [PDF]

, 2013
Organic light-emitting devices and solar cells are devices that create, manipulate, and convert excited states in organic semiconductors. It is crucial to characterize these excited states, or excitons, to optimize device performance in applications like
A Köhler, A Volcker, AA Avdeenko, AF Schwerin, C Bulliard, C Gärtner, D Kasemann, D Levy, DL Dexter, DN Congreve, F Marquez, G Klein, G Oster, G Sauerbrey, GA George, H Uoyama, HA Al-Attar, HP Müller, JJ Donkerbroek, K Goushi, KA Nguyen, M Kasha, M Liedtke, MA Baldo, MA Baldo, MA Baldo, MB Smith, MJ Currie, ML Mueller, MR Padhye, O Bolton, R Schüppel, RG Kepler, S Hirata, S Reineke, S Reineke, S Tokito, SK Kook, ST Roberts, U Sondermann, WA Luhman, WG Herkstroeter, WZ Yuan, Y Hong, Y Kawamura, Y Tomkiewicz, Y Zhang   +46 more
core   +2 more sources

Combining steady-state with frequency and time domain data to quantitatively analyze charge transport in organic light-emitting diodes [PDF]

, 2020
Typically, organic light-emitting diodes (OLEDs) are characterized only in steady-state to determine and optimize their efficiency. Adding further electro-optical measurement techniques in frequency and time domain helps to analyze charge carrier and ...
Blülle, Balthasar, Jenatsch, Sandra, Ruhstaller, Beat, Züfle, Simon   +3 more
core   +1 more source

A figure of merit for efficiency roll-off in TADF-based organic LEDs

Nature
Organic light-emitting diodes (OLEDs) are a revolutionary light-emitting display technology that has been successfully commercialized in mobile phones and televisions1,2.
S. Diesing, L. Zhang, E. Zysman‐Colman, I. Samuel   +3 more
semanticscholar   +1 more source

Advances in Host-Free White Organic Light-Emitting Diodes Utilizing Thermally Activated Delayed Fluorescence: A Comprehensive Review

Micromachines
The ever-growing prominence and widespread acceptance of organic light-emitting diodes (OLEDs), particularly those employing thermally activated delayed fluorescence (TADF), have firmly established them as formidable contenders in the field of lighting ...
Wenxin Zhang, Yaxin Li, Gang Zhang, Xiaotian Yang, Xi Chang, Guoliang Xing, He Dong, Jin Wang, Dandan Wang, Zhihong Mai, Xin Jiang   +10 more
doaj   +1 more source

Immense magnetic response of exciplex light emission due to correlated spin-charge dynamics

, 2016
As carriers slowly move through a disordered energy landscape in organic semiconductors, tiny spatial variations in spin dynamics relieve spin blocking at transport bottlenecks or in the electron-hole recombination process that produces light. Large room-
Flatté, Michael E., Harmon, Nicholas J., Sahin-Tiras, Kevser, Wang, Yifei, Wohlgenannt, Markus   +4 more
core   +2 more sources

A Highly Twisted Carbazole-Fused DABNA Derivative as an Orange-Red TADF Emitter for OLEDs with Nearly 40% EQE.

Angewandte Chemie, 2022
Multiple resonance (MR) type thermally activated delayed fluorescence (TADF) material is currently a research hotspot in organic light-emitting diodes (OLEDs) due to their high color purity and high exciton utilization.
Ying-Chun Cheng, Xiaochun Fan, Feng Huang, Xin Xiong, Jia Yu, Kai Wang, Chun‐Sing Lee, Xiaohong Zhang   +7 more
semanticscholar   +1 more source

Inverting Singlet and Triplet Excited States using Strong Light-Matter Coupling

, 2019
In organic microcavities, hybrid light-matter states can form with energies that differ from the bare molecular excitation energies by nearly 1 eV. A timely question, given recent advances in the development of thermally activated delayed fluorescence ...
Eizner, Elad, Kéna-Cohen, Stéphane, Martínez-Martínez, Luis A., Yuen-Zhou, Joel   +3 more
core   +1 more source

Ultrafast Structure and Dynamics in the Thermally Activated Delayed Fluorescence of a Carbene-Metal-Amide [PDF]

, 2018
Thermally activated delayed fluorescence has enormous potential for the development of efficient light emitting diodes. A recently discovered class of molecules (the carbene – metal – amides, CMAs) are exceptionally promising as they combine the small ...
Bochmann, Manfred, Hall, Christopher R., Meech, Stephen R., Romanov, Alexander S.   +3 more
core   +2 more sources