Results 41 to 50 of about 1,915,191 (239)

Diindolocarbazole – Achieving Multiresonant Thermally Activated Delayed Fluorescence Without The Need for Acceptor Units [PDF]

open access: yes, 2021
In this work we present a new multi-resonance thermally activated delayed fluorescence (MR-TADF) emitter paradigm, demonstrating that the structure need not require the presence of acceptor atoms.
Yoann, Olivier   +11 more
core   +2 more sources

Virtual Screening of TADF Emitters for Single-Layer OLEDs

open access: yesFrontiers in Chemistry, 2021
Thermally-activated delayed fluorescence (TADF) is a concept which helps to harvest triplet excitations, boosting the efficiency of an organic light-emitting diode. TADF can be observed in molecules with spatially separated donor and acceptor groups with
Kun-Han Lin   +3 more
doaj   +1 more source

Photophysical Characterisation of Thermally Activated Delayed Fluorescence (TADF) Materials

open access: yesDisplay and Imaging, 2017
In this work we present a brief characterization of thermally activated delayed fluorescence (TADF) emitters and describe the spectroscopic methods used to investigate them. Both steady state and time-resolved methods are presented. The effect of oxygen on delayed fluorescence is described.
Pander, Piotr, Dias, Fernando B.
openaire   +1 more source

Thermally Activated Delayed Fluorescence from Locally Excited State: Theoretical Prediction and Experimental Validation [PDF]

open access: yes, 2020
As is well known, the thermally activated delayed fluorescence (TADF) is always generated from charge-transfer (CT) excited states in electron-donor (D) – electron-acceptor (A) systems.
Hua, Geng   +8 more
core   +2 more sources

Electron-withdrawing Group Modified Carbazolophane Donors for Deep Blue Thermally Activated Delayed Fluorescence OLEDs [PDF]

open access: yes, 2021
We report two blue-emitting thermally activated delayed fluorescence (TADF) compounds employing a substituted carbazolophane (Czp) donor (indolo[2.2]paracyclophane).
Zhen, Zhang   +8 more
core   +2 more sources

Revealing the spin–vibronic coupling mechanism of thermally activated delayed fluorescence

open access: yesNature Communications, 2016
Knowing the photophysics of thermally-activated delayed fluorescence (TADF) is crucial when designing organic light emitting diodes. Here the authors show that spin orbit coupling in TADF materials is described by a second order vibronic coupling ...
Marc K. Etherington   +4 more
doaj   +1 more source

Sensitizing TADF Absorption Using Variable Length Oligo(phenylene ethynylene) Antennae

open access: yesFrontiers in Chemistry, 2020
Beyond their applications in organic light-emitting diodes (OLEDs), thermally activated delayed fluorescence (TADF) materials can also make good photonic markers.
Olga Franco   +14 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

Revisiting the Role of Charge Transfer and Local Excitations in Thermally Activated Delayed Fluorescence [PDF]

open access: yes, 2022
Thermally activated delayed fluorescence (TADF) is a phenomenon that relies on the upconversion of triplet excitons to singlet excitons by means of reverse intersystem crossing (rISC). It has been shown both experimentally and theoretically that the TADF
Leonardo Evaristo, de Sousa   +1 more
core   +2 more sources

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

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