Achieving High-Performance Nondoped OLEDs with Extremely Small Efficiency Roll-Off by Combining Aggregation-Induced Emission and Thermally Activated Delayed Fluorescence
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DOI: 10.1002/adfm.201606458
Abstract: Luminescent materials with thermally activated delayed fluorescence (TADF) can harvest singlet and triplet excitons to afford high electroluminescence (EL) efficiencies for organic light-emitting diodes (OLEDs). However, TADF emitters generally have to be dispersed into host… read more here.
Keywords: thermally activated; efficiency roll; activated delayed; efficiency ... See more keywords
Charge‐Transfer Exciton Manipulation Based on Hydrogen Bond for Efficient White Thermally Activated Delayed Fluorescence
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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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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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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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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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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
Thermally Activated Delayed Fluorescence Emitters Based on Rigid Lactam Acceptors: Simultaneously Achieving Desirable Emission Efficiency, Horizontal Orientation, and Reverse Intersystem Crossing
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DOI: 10.1002/adfm.202314533
Abstract: Thermally activated delayed fluorescence (TADF) materials that exhibit simultaneously high photoluminescence quantum yield (PLQY), rapid reverse intersystem crossing (RISC), and a high horizontal transition dipole ratio are highly desirable for realizing high‐performance organic light‐emitting diodes… read more here.
Keywords: efficiency; activated delayed; thermally activated; reverse intersystem ... See more keywords
Thermally Activated Delayed Fluorescent Ag(I) Complexes for Highly Efficient Scintillation and High‐Resolution X‐Ray Imaging
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DOI: 10.1002/adfm.202400436
Abstract: Organic thermally activated delayed fluorescent (TADF) scintillators hold promising potential for applications in medical radiography and security detection, but the poor X‐ray absorption ability and inferior radioluminescence (RL) hampered their progression. Herein, the study has… read more here.
Keywords: resolution ray; activated delayed; thermally activated; delayed fluorescent ... See more keywords
Tetra‐Donor Pyrazine Based Thermally Activated Delayed Fluorescence Emitters for Electroluminescence and Amplified Spontaneous Emission
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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
Near-Infrared Electrophosphorescence up to 1.1 µm using a Thermally Activated Delayed Fluorescence Molecule as Triplet Sensitizer.
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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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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