Results 31 to 40 of about 4,758 (226)

Thermally activated delayed fluorescence with 7% external quantum efficiency from a light-emitting electrochemical cell

open access: yesNature Communications, 2019
Thermally activated delayed fluorescence (TADF) emitters deliver impressive performance in sophisticated multilayer devices. Here, the authors report efficient TADF emission from light-emitting electrochemical cells that feature a solution-processed ...
Petter Lundberg   +5 more
doaj   +1 more source

Versatile boron‐based thermally activated delayed fluorescence materials for organic light‐emitting diodes

open access: yesAggregate, 2022
During the last few years, organoboron‐based thermally activated delayed fluorescence (TADF) materials have received extensive attention in optoelectronic area, owing to the unique electronegativity of boron atom.
Jianmei Han   +4 more
doaj   +1 more source

Routes for efficiency enhancement in fluorescent TADF exciplex host OLEDs gained from an electro‐optical device model [PDF]

open access: yes, 2019
Fluorescence-based organic light-emitting diodes (OLEDs) using thermally activated delayed fluorescence (TADF) have increasingly attracted attention in research and industry.
Kim, Jang‐Joo   +5 more
core   +1 more source

Strategic-tuning of radiative excitons for efficient and stable fluorescent white organic light-emitting diodes

open access: yesNature Communications, 2019
Demonstrating white organic light-emitting diodes (OLEDs) based on thermally activated delayed fluorescence (TADF) emitters with high performance and operational stability remains a challenge. Here, the authors show efficient and stable white OLEDs based
Zhongbin Wu   +10 more
doaj   +1 more source

Highly photoluminescent copper carbene complexes based on prompt rather than delayed fluorescence [PDF]

open access: yes, 2016
Linear two-coordinate copper complexes of cyclic (alkyl)(amino)-carbenes (CAAC)CuX (X = halide) show photoluminescence with solid-state quantum yields of up to 96%; in contrast to previously reported Cu photoemitters the emission is independent of ...
Alexander S. Romanov   +32 more
core   +1 more source

Novel D–A chromophores with condensed 1,2,4-triazine system simultaneously display thermally activated delayed fluorescence and crystallization-induced phosphorescence [PDF]

open access: yes, 2022
Control of photophysical properties is crucial for the continued development of electroluminescent devices and luminescent materials. Preparation and study of original molecules uncovers design rules towards efficient materials and devices.
Audebert, Pierre   +7 more
core   +4 more sources

Photoluminescence and electrochemiluminescence of thermally activated delayed fluorescence (TADF) emitters containing diphenylphosphine chalcogenide-substituted carbazole donors [PDF]

open access: yesJournal of Materials Chemistry C, 2021
We have successfully developed blue-emitting thermally activated delayed fluorescence (TADF) compounds derived from 2CzPN. They display novel electrochemiluminescence properties, these revealing correlations with measured Δ E ST values.
Shiv Kumar   +13 more
openaire   +4 more sources

Molecular Design Based on Donor-Weak Donor Scaffold for Blue Thermally-Activated Delayed Fluorescence Designed by Combinatorial DFT Calculations

open access: yesFrontiers in Chemistry, 2020
Quantum chemical calculations are necessary to develop advanced emitter materials showing thermally-activated delayed fluorescence (TADF) for organic light-emitting diodes (OLEDs).
Youichi Tsuchiya   +18 more
doaj   +1 more source

Triplet-Tuning: A Novel Family of Non-Empirical Exchange-Correlation Functionals [PDF]

open access: yes, 2019
In the framework of DFT, the lowest triplet excited state, T$_1$, can be evaluated using multiple formulations, the most straightforward of which are UDFT and TDDFT.
Lin, Zhou, Van Voorhis, Troy
core   +4 more sources

Intramolecular Hydrogen Bonding in Thermally Activated Delayed Fluorescence Emitters: Is There Evidence Beyond Reasonable Doubt? [PDF]

open access: yes, 2022
Intramolecular hydrogen bonding between donor and acceptor segments in thermally activated delayed fluorescence (TADF) materials is now frequently employed to─purportedly─rigidify the structure and improve the emission performance of these materials ...
Batsanov, AS   +5 more
core   +1 more source

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