☆ 4.8 Article

Highly Efficient Green and Red Narrowband Emissive Organic Light-Emitting Diodes Employing Multi-Resonant Thermally Activated Delayed Fluorescence Emitters

ANGEWANDTE CHEMIE-INTERNATIONAL EDITION (2022)

相关参考文献

注意：仅列出部分参考文献，下载原文获取全部文献信息。

Article Materials Science, Multidisciplinary

Managing Intersegmental Charge-Transfer and Multiple Resonance Alignments of D3-A Typed TADF Emitters for Red OLEDs with Improved Efficiency and Color Purity

Xiao-Chun Fan et al.

Summary: This research highlights the challenges in developing MR-TADF emitters that maintain high color purity in the red region, and emphasizes the importance of excited state alignments of MR-based donor-acceptor molecules in determining their preferring characteristics. By using the newly designed MR-based D-A molecule mBDPA-TOAT, high external quantum efficiency and color purity are achieved.

ADVANCED OPTICAL MATERIALS (2022)

添加到收藏夹

Article Chemistry, Multidisciplinary

Diindolocarbazole - achieving multiresonant thermally activated delayed fluorescence without the need for acceptor units

David Hall et al.

Summary: A new multi-resonance thermally activated delayed fluorescence (MR-TADF) emitter paradigm is introduced, showing improved properties without the need for acceptor atoms. Using DiICzMes(4) compound, a red-shifted emission and enhanced photoluminescence quantum yield were achieved, with the potential for even greater performance in materials design.

MATERIALS HORIZONS (2022)

添加到收藏夹

Article Chemistry, Multidisciplinary

Achieving 37.1% Green Electroluminescent Efficiency and 0.09 eV Full Width at Half Maximum Based on a Ternary Boron-Oxygen-Nitrogen Embedded Polycyclic Aromatic System

Xinliang Cai et al.

Summary: In this study, a ternary boron-oxygen-nitrogen embedded polycyclic aromatic hydrocarbon with multiple resonance thermally activated delayed fluorescence (MR-TADF) properties, named DBNO, was developed. The designed molecule exhibits a vivid green emission with high photoluminescence quantum yield and an extremely narrow full width at half maximum. The organic light-emitting diode (OLED) based on DBNO shows significantly improved device performance with a narrowband green emission and high external quantum efficiency achieved through the TADF-sensitization mechanism.

ANGEWANDTE CHEMIE-INTERNATIONAL EDITION (2022)

添加到收藏夹

Article Chemistry, Physical

Modeling of Multiresonant Thermally Activated Delayed Fluorescence Emitters-Properly Accounting for Electron Correlation Is Key!

David Hall et al.

Summary: The study demonstrates the robustness of the SCS-CC2 wavefunction-based method in predicting the energy difference between the lowest singlet and triplet excited states of MR-TADF materials, with an average deviation of 0.04 eV compared to experimental data. Compared to other methods, SCS-CC2 provides a better account of Coulomb correlation effects in describing the relevant electronic excited states. The importance of using wavefunction methods in relation to MR-TADF emitter design and associated photophysics is highlighted in this work.

JOURNAL OF CHEMICAL THEORY AND COMPUTATION (2022)

添加到收藏夹

Article Optics

Stable pure-blue hyperfluorescence organic light-emitting diodes with high-efficiency and narrow emission

Chin-Yiu Chan et al.

Summary: This study presents pure-blue OLEDs with high efficiency, narrow emission, and good stability, showing promise for display applications. The design is based on a two-unit stacked tandem hyperfluorescence OLED with strict control of device fabrication and procedures to further improve device lifetimes.

NATURE PHOTONICS (2021)

添加到收藏夹

Article Optics

The role of host-guest interactions in organic emitters employing MR-TADF

Xiugang Wu et al.

Summary: The study reveals that effective multiple-resonance thermally activated delayed fluorescence requires suitable host-guest interactions to boost TADF. Additionally, this boosted-TADF mechanism can be applied to any fluorescence dye with a thermally accessible energy gap, enabling the development of high-performance organic light-emitting diodes.

NATURE PHOTONICS (2021)

添加到收藏夹

Article Materials Science, Multidisciplinary

Thermally Activated Delayed Fluorescence Properties of Trioxoazatriangulene Derivatives Modified with Electron Donating Groups

Youichi Tsuchiya et al.

Summary: By modifying the donor substituents, a series of trioxoazatriangulene derivatives show emission colors ranging from green to orange with varying spectral widths, attributed to different charge-transfer transitions or multiple resonance effects.

ADVANCED OPTICAL MATERIALS (2021)

添加到收藏夹

Article Nanoscience & Nanotechnology

Thermally Activated Delayed Fluorescence Emitters with Intramolecular Proton Transfer for High Luminance Solution-Processed Organic Light-Emitting Diodes

Abhishek Kumar Gupta et al.

Summary: The study introduces a novel organic emitter TPXZBM for solution-processed OLEDs, which exhibits both high efficiency and unusual characteristics of TADF and intramolecular proton transfer. Comparison with the previously reported PXZPDO indicates higher efficiency at high luminance for PXZPDO and lower efficiency for TPXZBM, possibly due to the intramolecular proton transfer.

ACS APPLIED MATERIALS & INTERFACES (2021)

添加到收藏夹

Article Chemistry, Multidisciplinary

Peripheral Decoration of Multi-Resonance Molecules as a Versatile Approach for Simultaneous Long-Wavelength and Narrowband Emission

Yanyu Qi et al.

Summary: A new approach of peripherally decorating MR emitter with electron donors enables the emission spectra of MR emitters to red-shift while retaining narrowband emission, leading to the realization of the first narrowband yellow emitter with emission maxima of 562 nm and excellent color purity. Highly efficient OLEDs with an external quantum efficiency of over 24% are fabricated by employing these newly developed MR molecules as emitters.

ADVANCED FUNCTIONAL MATERIALS (2021)

添加到收藏夹

Article Nanoscience & Nanotechnology

Approaching Efficient and Narrow RGB Electroluminescence from D-A-Type TADF Emitters Containing an Identical Multiple Resonance Backbone as the Acceptor

Feng Huang et al.

Summary: By combining traditional TADF and MR-TADF designs, it is possible to simultaneously achieve color tuning and narrowing of the spectral width of conventional TADF emission. This strategy selects a typical MR core as the backbone and attaches D segments of different electron donating abilities and numbers to achieve three different TADF emitters with emissions covering a range of colors.

ACS APPLIED MATERIALS & INTERFACES (2021)

添加到收藏夹

Review Chemistry, Multidisciplinary

Identification of the Key Parameters for Horizontal Transition Dipole Orientation in Fluorescent and TADF Organic Light-Emitting Diodes

Francisco Tenopala-Carmona et al.

Summary: Horizontal orientation of the emissive transition dipole moment (TDM) in OLEDs can significantly improve light outcoupling efficiency. Determining the drivers of horizontal orientation, such as emitter molecule aspect ratio and glass-transition temperature (T-g), is crucial. While molecular weight and linearity are key parameters for neat systems, host T-g and emitter length and MW become more relevant in host-guest systems with low and high molecular weight emitters, respectively. Future research should aim to establish a comprehensive model of molecular orientation in OLEDs.

ADVANCED MATERIALS (2021)

添加到收藏夹

Article Chemistry, Multidisciplinary

Multi-Resonance Deep-Red Emitters with Shallow Potential-Energy Surfaces to Surpass Energy-Gap Law

Yuewei Zhang et al.

Summary: Efficient deep-red organic emitters with high quantum efficiencies were developed by constructing polycyclic heteroaromatics with multiple boron and nitrogen atoms. The introduction of specific structures led to restricted π-bonding states and shallow potential energy surfaces, enabling the emitters to achieve high quantum efficiencies in a normal planar organic light-emitting diode structure.

ANGEWANDTE CHEMIE-INTERNATIONAL EDITION (2021)

添加到收藏夹

Article Chemistry, Multidisciplinary

Simultaneously Enhanced Reverse Intersystem Crossing and Radiative Decay in Thermally Activated Delayed Fluorophors with Multiple Through-space Charge Transfers

Tianyu Huang et al.

Summary: Materials with thermally activated delayed fluorescence (TADF) and through-space charge transfer (CT) properties have received significant attention recently. By developing TADF molecules with ortho-linked multiple donors-acceptor motif, near-degenerate excited states are created to enhance spin-orbit coupling, leading to improved luminescence performance.

ANGEWANDTE CHEMIE-INTERNATIONAL EDITION (2021)

添加到收藏夹

Article Chemistry, Multidisciplinary

Wide-Range Color Tuning of Narrowband Emission in Multi-resonance Organoboron Delayed Fluorescence Materials through Rational Imine/Amine Functionalization

Minlang Yang et al.

Summary: Establishing a simple and versatile design strategy to modulate emission colors while maintaining high efficiency and color purity is challenging for MR-TADF materials. By introducing specific functional groups, it is possible to achieve fine tuning of emission colors without compromising narrow spectral features, leading to the development of high-efficiency and color-pure organic light-emitting diodes.

ANGEWANDTE CHEMIE-INTERNATIONAL EDITION (2021)

添加到收藏夹

Article Nanoscience & Nanotechnology

Excited-State Modulation in Donor-Substituted Multiresonant Thermally Activated Delayed Fluorescence Emitters

Sen Wu et al.

Summary: By decorating different numbers and types of electron donors around a MR-TADF core, the emission properties can be tuned to achieve red-shifting or improved luminescence efficiency.

ACS APPLIED MATERIALS & INTERFACES (2021)

添加到收藏夹

Article Chemistry, Physical

Exact Solution of Kinetic Analysis for Thermally Activated Delayed Fluorescence Materials

Youichi Tsuchiya et al.

Summary: The photophysical analysis of TADF materials is crucial for understanding their stability and performance. A new method has been demonstrated in this report to determine rate constants without additional assumptions, providing a comprehensive understanding of the photophysics of diverse TADF emitters.

JOURNAL OF PHYSICAL CHEMISTRY A (2021)

添加到收藏夹

Article Chemistry, Multidisciplinary

Molecular design of thermally activated delayed fluorescent emitters for narrowband orange-red OLEDs boosted by a cyano-functionalization strategy

Yang Liu et al.

Summary: By attaching a cyano functionality at the lowest unoccupied molecular orbital location of the MR-TADF skeleton, the red-shifted emission and good color purity of orange-red MR-TADF emitters can be achieved. The coplanar conformation of the CN group helps to restrict structure relaxation and maintain the high-quality emission characteristics in orange-red TADF-OLEDs.

CHEMICAL SCIENCE (2021)

添加到收藏夹

Review Chemistry, Multidisciplinary

Multiresonant Thermally Activated Delayed Fluorescence Emitters Based on Heteroatom-Doped Nanographenes: Recent Advances and Prospects for Organic Light-Emitting Diodes

Subeesh Madayanad Suresh et al.

ADVANCED FUNCTIONAL MATERIALS (2020)

添加到收藏夹

Article Materials Science, Multidisciplinary

Improving Processability and Efficiency of Resonant TADF Emitters: A Design Strategy

David Hall et al.

ADVANCED OPTICAL MATERIALS (2020)

添加到收藏夹

Article Materials Science, Multidisciplinary

Molecular-Structure and Device-Configuration Optimizations toward Highly Efficient Green Electroluminescence with Narrowband Emission and High Color Purity

Yincai Xu et al.

ADVANCED OPTICAL MATERIALS (2020)

添加到收藏夹

Article Chemistry, Multidisciplinary

Full-Color, Narrowband, and High-Efficiency Electroluminescence from Boron and Carbazole Embedded Polycyclic Heteroaromatics

Minlang Yang et al.

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY (2020)

添加到收藏夹

Article Multidisciplinary Sciences

Highly emissive excitons with reduced exchange energy in thermally activated delayed fluorescent molecules

Anton Pershin et al.

NATURE COMMUNICATIONS (2019)

添加到收藏夹

Article Optics

Narrowband deep-blue organic light-emitting diode featuring an organoboron-based emitter

Yasuhiro Kondo et al.

NATURE PHOTONICS (2019)

添加到收藏夹

Article Chemistry, Multidisciplinary

Multi-Resonance Induced Thermally Activated Delayed Fluorophores for Narrowband Green OLEDs

Yuewei Zhang et al.

ANGEWANDTE CHEMIE-INTERNATIONAL EDITION (2019)

添加到收藏夹

Article Materials Science, Multidisciplinary

The Design of Fused Amine/Carbonyl System for Efficient Thermally Activated Delayed Fluorescence: Novel Multiple Resonance Core and Electron Acceptor

Yi Yuan et al.

ADVANCED OPTICAL MATERIALS (2019)

添加到收藏夹

Article Chemistry, Multidisciplinary

High-Performance Dibenzoheteraborin-Based Thermally Activated Delayed Fluorescence Emitters: Molecular Architectonics for Concurrently Achieving Narrowband Emission and Efficient Triplet-Singlet Spin Conversion

In Seob Park et al.

ADVANCED FUNCTIONAL MATERIALS (2018)

添加到收藏夹

Article Chemistry, Multidisciplinary

Triazatruxene: A Rigid Central Donor Unit for a D-A3 Thermally Activated Delayed Fluorescence Material Exhibiting Sub-Microsecond Reverse Intersystem Crossing and Unity Quantum Yield via Multiple Singlet-Triplet State Pairs

Paloma L. dos Santos et al.

ADVANCED SCIENCE (2018)

添加到收藏夹

Review Nanoscience & Nanotechnology

All-organic thermally activated delayed fluorescence materials for organic light-emitting diodes

Yuchao Liu et al.

NATURE REVIEWS MATERIALS (2018)

添加到收藏夹

Article Chemistry, Multidisciplinary

Achieving Nearly 30% External Quantum Efficiency for Orange-Red Organic Light Emitting Diodes by Employing Thermally Activated Delayed Fluorescence Emitters Composed of 1,8-Naphthalimide-Acridine Hybrids

Weixuan Zeng et al.

ADVANCED MATERIALS (2018)

添加到收藏夹

Article Materials Science, Multidisciplinary

Organic light emitting diodes with horizontally oriented thermally activated delayed fluorescence emitters

D. H. Kim et al.

JOURNAL OF MATERIALS CHEMISTRY C (2017)

添加到收藏夹

Article Chemistry, Multidisciplinary

A New Design Strategy for Efficient Thermally Activated Delayed Fluorescence Organic Emitters: From Twisted to Planar Structures

Xian-Kai Chen et al.

ADVANCED MATERIALS (2017)

添加到收藏夹

Article Chemistry, Multidisciplinary

Highly Efficient Nondoped OLEDs with Negligible Efficiency Roll-Off Fabricated from Aggregation-Induced Delayed Fluorescence Luminogens

Jian Huang et al.

ANGEWANDTE CHEMIE-INTERNATIONAL EDITION (2017)

添加到收藏夹

Article Chemistry, Multidisciplinary

Purely Organic Thermally Activated Delayed Fluorescence Materials for Organic Light-Emitting Diodes

Michael Y. Wong et al.

ADVANCED MATERIALS (2017)

添加到收藏夹

Review Chemistry, Physical

Molecular Design Strategy of Organic Thermally Activated Delayed Fluorescence Emitters

Yirang Im et al.

CHEMISTRY OF MATERIALS (2017)

添加到收藏夹

Article Chemistry, Multidisciplinary

Ultrapure Blue Thermally Activated Delayed Fluorescence Molecules: Efficient HOMO-LUMO Separation by the Multiple Resonance Effect

Takuji Hatakeyama et al.

ADVANCED MATERIALS (2016)

添加到收藏夹

Article Multidisciplinary Sciences

Triplet energies and excimer formation in meta- and para-linked carbazolebiphenyl matrix materials

Sergey A. Bagnich et al.

PHILOSOPHICAL TRANSACTIONS OF THE ROYAL SOCIETY A-MATHEMATICAL PHYSICAL AND ENGINEERING SCIENCES (2015)

添加到收藏夹

Article Chemistry, Multidisciplinary

A Fluorescent Organic Light-Emitting Diode with 30% External Quantum Efficiency

Jin Won Sun et al.

ADVANCED MATERIALS (2014)

添加到收藏夹

Article Chemistry, Multidisciplinary

Triplet Harvesting with 100% Efficiency by Way of Thermally Activated Delayed Fluorescence in Charge Transfer OLED Emitters

Fernando B. Dias et al.

ADVANCED MATERIALS (2013)

添加到收藏夹

Article Materials Science, Multidisciplinary

Analysis of exciton annihilation in high-efficiency sky-blue organic light-emitting diodes with thermally activated delayed fluorescence

Kensuke Masui et al.

ORGANIC ELECTRONICS (2013)

添加到收藏夹

Article Chemistry, Multidisciplinary

Efficient green thermally activated delayed fluorescence (TADF) from a phenoxazine-triphenyltriazine (PXZ-TRZ) derivative

Hiroyuki Tanaka et al.

CHEMICAL COMMUNICATIONS (2012)

添加到收藏夹

Article Chemistry, Physical

Effective method for the computation of optical spectra of large molecules at finite temperature including the Duschinsky and Herzberg-Teller effect:: The Qx band of porphyrin as a case study

Fabrizio Santoro et al.

JOURNAL OF CHEMICAL PHYSICS (2008)

添加到收藏夹

Article Materials Science, Multidisciplinary

Stacking fault related 3.31-eV luminescence at 130-meV acceptors in zinc oxide

M. Schirra et al.

PHYSICAL REVIEW B (2008)

添加到收藏夹

Article Optics

Photonic-crystal full-colour displays

Andre C. Arsenault et al.

NATURE PHOTONICS (2007)

添加到收藏夹

© Peeref 2019-2024. All rights reserved.