Articles with "delayed fluorescence" as a keyword



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Charge‐Transfer Exciton Manipulation Based on Hydrogen Bond for Efficient White Thermally Activated Delayed Fluorescence

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Published in 2019 at "Advanced Functional Materials"

DOI: 10.1002/adfm.201908568

Abstract: Despite the success of thermally activated delayed fluorescence (TADF) emitters in monochromatic organic light‐emitting diodes (OLED), only few efficient full‐TADF white OLEDs (WOLED) are reported because of the challenge in rational exciton allocation between blue… read more here.

Keywords: hydrogen bond; thermally activated; tadf; delayed fluorescence ... See more keywords
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Manipulating Complementarity of Binary White Thermally Activated Delayed Fluorescence Systems for 100% Exciton Harvesting in OLEDs

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Published in 2021 at "Advanced Functional Materials"

DOI: 10.1002/adfm.202011169

Abstract: Different to fluorescent and phosphorescent counterparts, white thermally activated delayed fluorescence (TADF) involves in multiple reverse intersystem crossing (RISC), leading to the correlation but competition between blue and other color components in both singlet and… read more here.

Keywords: systems 100; thermally activated; delayed fluorescence; 100 exciton ... See more keywords
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Thermally Activated Delayed Fluorescence Warm White Organic Light Emitting Devices with External Quantum Efficiencies Over 30%

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Published in 2021 at "Advanced Functional Materials"

DOI: 10.1002/adfm.202101647

Abstract: While monochrome organic light‐emitting diodes (OLEDs) based on thermally activated delayed fluorescence (TADF) emitters have achieved over 30% external quantum efficiencies (EQEs), all‐TADF white OLEDs (WOLEDs) are still lagging behind. Herein, a simple system based… read more here.

Keywords: organic light; light emitting; thermally activated; tadf ... See more keywords
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Manipulating Charge‐Transfer Excitons by Exciplex Matrix: Toward Thermally Activated Delayed Fluorescence Diodes with Power Efficiency beyond 110 lm W−1

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Published in 2021 at "Advanced Functional Materials"

DOI: 10.1002/adfm.202102739

Abstract: The understanding of the external enhancement effects from host matrixes on thermally activated delayed fluorescence (TADF) emitters is crucial but incomprehensive at present. Herein, a series of phosphine oxide (PO) acceptors mDBSOSPO (m = 2,… read more here.

Keywords: thermally activated; charge transfer; delayed fluorescence; charge ... See more keywords
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Near-Infrared Electrophosphorescence up to 1.1 µm using a Thermally Activated Delayed Fluorescence Molecule as Triplet Sensitizer.

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Published in 2017 at "Advanced materials"

DOI: 10.1002/adma.201604265

Abstract: A tenfold improvement in the external electroluminescence quantum efficiency of NIR electrophosphorescence is demonstrated compared to devices with conventional fluorescent materials as host, by applying the concept of thermally activated delayed fluorescence to achieve an… read more here.

Keywords: thermally activated; electrophosphorescence; near infrared; delayed fluorescence ... See more keywords
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Versatile Molecular Functionalization for Inhibiting Concentration Quenching of Thermally Activated Delayed Fluorescence.

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Published in 2017 at "Advanced materials"

DOI: 10.1002/adma.201604856

Abstract: Concentration quenching of thermally activated delayed fluorescence is found to be dominated by electron-exchange interactions, as described by the Dexter energy-transfer model. Owing to the short-range nature of the electron-exchange interactions, even a small modulation… read more here.

Keywords: thermally activated; concentration quenching; quenching thermally; delayed fluorescence ... See more keywords
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Development of Pure Green Thermally Activated Delayed Fluorescence Material by Cyano Substitution

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Published in 2022 at "Advanced Materials"

DOI: 10.1002/adma.202201778

Abstract: Multiple resonance (MR)‐effect‐induced thermally activated delayed fluorescence (TADF) materials have garnered significant attention because they can achieve both high color purity and high external quantum efficiency (EQE). However, the reported green‐emitting MR‐TADF materials exhibit broader… read more here.

Keywords: thermally activated; delayed fluorescence; activated delayed; pure green ... See more keywords
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Curved Nanographenes: Multiple Emission, Thermally Activated Delayed Fluorescence, and Non-Radiative Decay.

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Published in 2023 at "Advanced materials"

DOI: 10.1002/adma.202212064

Abstract: The intriguing and rich photophysical properties of three curved nanographenes (CNG), each containing a corannulene (Cor) and a tert-butylhexa-peri-hexabenzocoronene (HBC-tBu) fragment, have been investigated as a function of their structural design (loose-helicene, CNG 6; cycloheptatrienically… read more here.

Keywords: thermally activated; cng; delayed fluorescence; activated delayed ... See more keywords
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Transformation from Nonthermally Activated Delayed Fluorescence Molecules to Thermally Activated Delayed Fluorescence Molecules

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Published in 2020 at "Advanced Optical Materials"

DOI: 10.1002/adom.202001025

Abstract: A novel molecular design approach transforming nonthermally activated delayed fluorescence (TADF) molecules to TADF molecules is developed for high external quantum efficiencies in TADF devices by utilizing an opened double emission process through selective twisting… read more here.

Keywords: high external; delayed fluorescence; fluorescence molecules; nonthermally activated ... See more keywords
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Dipole Moment- and Molecular Orbital-Engineered Phosphine Oxide-Free Host Materials for Efficient and Stable Blue Thermally Activated Delayed Fluorescence.

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Published in 2021 at "Advanced science"

DOI: 10.1002/advs.202102141

Abstract: To utilize thermally activated delayed fluorescence (TADF) technology for future displays, it is necessary to develop host materials which harness the full potential of blue TADF emitters. However, no publication has reported such hosts yet.… read more here.

Keywords: thermally activated; blue; tadf; delayed fluorescence ... See more keywords
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Thermally Activated Delayed Fluorescence Material: An Emerging Class of Metal-Free Luminophores for Biomedical Applications.

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Published in 2021 at "Advanced science"

DOI: 10.1002/advs.202102970

Abstract: The development of simple, efficient, and biocompatible organic luminescent molecules is of great significance to the clinical transformation of biomaterials. In recent years, purely organic thermally activated delayed fluorescence (TADF) materials with an extremely small… read more here.

Keywords: fluorescence; thermally activated; tadf; delayed fluorescence ... See more keywords