Results 11 to 20 of about 4,660 (240)

Highlights on Gold TADF Complexes [PDF]

Inorganics, 2019
Thermally activated delayed fluorescence (TADF) and TADF-organic light-emitting diodes (OLEDs) systems are being given increasing attention in research nowadays.
João CARLOS Lima, Laura Rodríguez
exaly   +11 more sources

A Computational Descriptor Analysis on Excited State Behaviours of a Series of TADF and Non-TADF Compounds [PDF]

Physical Chemistry Chemical Physics, 2021
Thermally activated delayed fluorescence (TADF) behaviours of 17 organic TADF emitters and two non-TADF chromophores bearing various donor and acceptor moieties were investigated, focusing on torsion angle, singlet–triplet gap (Δ E ST ), spin orbit coupling (SOC) and ...
Pelin Ulukan, Ekin Esme Bas, Rengin Busra Ozek, Cansul Dal Kaynak, Antonio Monari, Viktorya Aviyente, Saron Catak   +6 more
core   +7 more sources

Maximizing TADF via Conformational Optimization [PDF]

The Journal of Physical Chemistry A, 2021
We investigate a new strategy to enhance thermally activated delayed fluorescence (TADF) in organic light-emitting diodes (OLEDs). Given that the TADF rate of a molecule depends on its conformation, we hypothesize that there exists a conformation that maximizes the TADF rate. To test this idea, we use time-dependent density functional theory (TDDFT) to
Changhae Andrew Kim, Troy Van Voorhis
core   +5 more sources

Strongly Luminescent Tetradentate Palladium(II)‐TADF Emitters. Blue TADF And TADF‐Sensitized OLEDs with External Quantum Efficiencies Over 23%

Advanced Optical Materials, 2023
AbstractDue to the low‐lying Pd(4d)‐orbitals, luminescent palladium(II) complexes usually show 3IL phosphorescence (IL = intraligand) with excited state lifetimes in the range of hundreds of microseconds, which limits their application in blue organic light‐emitting diodes (OLEDs).
Man‐Ki Sit, Glenna So Ming Tong, Tsz‐Lung Lam, Gang Cheng, Faan‐Fung Hung, Kwok‐Ming So, Lili Du, Kin‐On Choy, Kam‐Hung Low, Chi‐Ming Che   +9 more
openaire   +2 more sources

Unified Framework for Photophysical Rate Calculations in TADF Molecules [PDF]

Journal of Chemical Theory and Computation, 2021
One of the challenges in organic light-emitting diodes research is finding ways to increase device efficiency by making use of the triplet excitons that are inevitably generated in the process of electroluminescence. One way to do so is by thermally activated delayed fluorescence (TADF), a process in which triplet excitons undergo upconversion to ...
Leonardo Evaristo de Sousa, Piotr de Silva   +1 more
openaire   +3 more sources

TADF Dye-Loaded Nanoparticles for Fluorescence Live-Cell Imaging [PDF]

Frontiers in Chemistry, 2020
Thermally activated delayed fluorescence (TADF) molecules offer nowadays a powerful tool in the development of novel organic light emitting diodes due to their capability of harvesting energy from non-emissive triplet states without using heavy-metal ...
Carina I. C. Crucho, João Avó, Ana M. Diniz, Sandra N. Pinto, José Barbosa, Poppy O. Smith, Mário Nuno Berberan-Santos, Lars-Olof Pålsson, Fernando B. Dias   +8 more
doaj   +4 more sources

High‐Efficiency TADF Dendritic Emitters Enabled by Synchronously Inhibiting Degenerated Triplet Excited States and Structural Relaxation Toward Solution‐Processed OLEDs with EQE Over 33% [PDF]

Advanced Science
Manufacturing high‐performance solution‐processed organic light‐emitting diodes (OLEDs) employing thermally activated delayed fluorescence (TADF) dendritic emitters remains a formidable challenge due to the lack of efficient TADF dendrimers.
Xiaoxiang Yu, Wei Ping, Chengshuang Song, Jinyang Zhao, Lei Hua, Junjie Wang, Shian Ying, Yuchao Liu, Zhongjie Ren, Shouke Yan   +9 more
doaj   +2 more sources

What Controls the Orientation of TADF Emitters? [PDF]

Frontiers in Chemistry, 2020
Thermally-activated delayed fluorescence (TADF) emitters—just like phosphorescent ones—can in principle allow for 100% internal quantum efficiency of organic light-emitting diodes (OLEDs), because the initially formed electron-hole pairs in the non-emissive triplet state can be efficiently converted into emissive singlets by reverse intersystem ...
Bilal A. Naqvi, Markus Schmid, Ettore Crovini, Prakhar Sahay, Tassilo Naujoks, Francesco Rodella, Zhen Zhang, Peter Strohriegl, Stefan Bräse, Stefan Bräse, Eli Zysman-Colman, Wolfgang Brütting   +11 more
openaire   +9 more sources

Highly Efficient Mechanochromic Thermally Activated Delayed Fluorescence in the Deep Red to Near-Infrared in Copper(I) [2.2]Isoindolinophanyl-Carbene Carbazolates. [PDF]

Angew Chem Int Ed Engl
Electrophilic [2.2]isoindolinophanyl‐based carbene iPC has been employed as charge‐transfer acceptor ligand in a series of [Cu(iPC)(carbazolate)], which show mechanochromism and environment‐dependent luminescence due to intermolecular C─‐H‐π interactions.
Muthig AMT, Maity S, Prüfer A, Krieger J, Belyaev A, Weiß JB, Henke S, Hupp B, Ewald B, Pflaum J, Steffen A.   +10 more
europepmc   +3 more sources

Recent Progress in Blue Thermally Activated Delayed Fluorescence Emitters and Their Applications in OLEDs: Beyond Pure Organic Molecules with Twist D-π-A Structures

Micromachines, 2022
Thermally activated delayed fluorescence (TADF) materials, which can harvest all excitons and emit light without the use of noble metals, are an appealing class of functional materials emerging as next-generation organic electroluminescent materials ...
Yiting Gao, Siping Wu, Guogang Shan, Gang Cheng   +3 more
doaj   +1 more source