Articles with "delayed fluorescence" as a keyword



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

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

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

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

Enhancing Reverse Intersystem Crossing of Multiple Resonance Type Thermally Activated Delayed Fluorescence Emitter by Introducing Spatial Perturbation

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Published in 2024 at "Advanced Functional Materials"

DOI: 10.1002/adfm.202313726

Abstract: For multiple resonance (MR) type thermally activated delayed fluorescence (TADF) emitters, electron cloud distributions of their π‐conjugated planes are crucial for determining their eventual performance. Currently, modulation attempts of MR‐TADF emitters are mainly inside the… read more here.

Keywords: activated delayed; thermally activated; type thermally; resonance type ... See more keywords

Tetra‐Donor Pyrazine Based Thermally Activated Delayed Fluorescence Emitters for Electroluminescence and Amplified Spontaneous Emission

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Published in 2024 at "Advanced Functional Materials"

DOI: 10.1002/adfm.202409592

Abstract: Thermally activated delayed fluorescence (TADF) materials are expected to address triplet‐related losses in electrically driven organic lasers, as the electrically generated triplets in the materials can be converted to radiative singlets through reverse intersystem crossing… read more here.

Keywords: activated delayed; spontaneous emission; thermally activated; emission ... 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

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

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

Thermally Activated Delayed Fluorescence‐Guided Photodynamic Therapy Through Skeleton‐Homologous Nanoparticles: a Rational Material Design for High‐Efficient and High‐Contrast Theranostics

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Published in 2025 at "Advanced Materials"

DOI: 10.1002/adma.202500236

Abstract: Although photoluminescence imaging‐guided photodynamic therapy (PDT) is promising for theranostics, it easily suffers from tissue autofluorescence and PDT photoproducts. To develop time‐resolved imaging (TRI)‐guided PDT with long‐lived emission pathways, like thermally activated delayed fluorescence (TADF),… read more here.

Keywords: tri; guided photodynamic; pdt; delayed fluorescence ... See more keywords