Results 81 to 90 of about 4,660 (240)

Organic thermally activated delayed fluorescence (TADF) compounds used in photocatalysis [PDF]

, 2021
We thank Syngenta and the EPSRC Centre for Doctoral Training in Critical Resource Catalysis (CRITICAT) for financial support [Ph.D. studentship to “M.B.”; Grant code: EP/L016419/1].Organic compounds that show Thermally Activated Delayed Fluorescence ...
Zysman-Colman, Eli, Bryden, Megan Amy
core   +1 more source

Donor Extended Blue TADF Dendrimer for High‐Performance Solution‐Processed OLEDs

Advanced Science, EarlyView.
A dendronized MR‐TADF emitter, DOBNA‐SpAc‐DCz, was designed to improve solubility, hole transport, and exciton dynamics for solution‐processed OLEDs. Incorporation of ter(tert‐butylcarbazole) dendrons decreases ΔEST and accelerates RISC, yielding short delayed lifetimes (∼2 µs).
Mahni Fatahi, Yuka Yasuda, Ryo Kondo, Hironori Kaji, Eli Zysman‐Colman   +4 more
wiley   +1 more source

NIR TADF emitters and OLEDs: challenges, progress, and perspectives

Chemical Science, 2022
This review presents the recent progress of NIR TADF emitters along with their molecular design strategies and photophysical properties, as well as the electroluminescence performance data of the emitters and their OLEDs.
Yuxin Xiao, Hailan Wang, Zongliang Xie, Mingyao Shen, Rongjuan Huang, Yuchen Miao, Guanyu Liu, Tao Yu, Wei Huang   +8 more
openaire   +2 more sources

TD-DFT and Experimental Methods for Unraveling the Energy Distribution of Charge-Transfer Triplet/Singlet States of a TADF Molecule in a Frozen Matrix

, 2020
Reverse intersystem crossing (RISC) rate of a thermally activated delayed fluorescence (TADF) molecule is sensitive to the energy alignment of singlet charge-transfer state (1CT), triplet charge-transfer state (3CT), and locally excited triplet state ...
Seung-Je, Woo, Jang-Joo, Kim
core   +1 more source

Integrated Optoelectronic Model to Predict the External Quantum Efficiency of Single‐Layer TADF Organic Light‐Emitting Diodes

Advanced Electronic Materials, EarlyView.
An experimentally validated optoelectronic device model is presented to describe the efficiency and roll‐off behavior of single‐layer TADF OLEDs. By coupling charge transport, exciton dynamics, and optical outcoupling, the model reproduces the External Quantum Efficiency (EQE) across different emission layer thicknesses and temperatures, offering ...
Jawid Nikan, Kaiwen Guo, Yungui Li, Paul W. M. Blom, Gert‐Jan A. H. Wetzelaer   +4 more
wiley   +1 more source

Hyperfluorescence circularly polarized OLEDs consisting of chiral TADF sensitizers and achiral multi-resonance emitters

Nature Communications
Developing circularly polarized organic light-emitting diodes (CP-OLEDs) that simultaneously achieve narrow-spectrum emission and high electroluminescence (EL) efficiency remains a formidable challenge.
Letian Chen, Peng Zou, Jinke Chen, Letian Xu, Ben Zhong Tang, Zujin Zhao   +5 more
doaj   +1 more source

Extracting Design Principles for Efficient Thermally Activated Delayed Fluorescence (TADF) from a Simple Four-State Model

, 2019
We introduce a simple quantum-mechanical model for thermally activated delayed fluorescence (TADF). The Hamiltonian is represented in the basis of four spin-mixed diabatic states representing pure charge transfer (CT) and local excitations (LE).
Troy, Van Voorhis, Changhae Andrew, Kim, Tianyu, Zhu, Piotr, de Silva   +3 more
core   +1 more source

Dual Impact of Long‐Lived Localized Carriers Induced by Restricted Hole Transfer in Organic Photovoltaics and Photocatalytic Hydrogen Evolution

Advanced Energy Materials, EarlyView.
This work clarifies why organic semiconductors perform differently in photovoltaic devices and photocatalytic nanoparticles. By examining D18:Y5 and PM6:Y6 systems, we show how aggregation, exciton lifetime, and interfacial charge transfer behavior govern energy‐conversion pathways.
Gayoung Ham, Sanghyeok An, Wooteak Jung, Hyun Min Kwon, Seonghyeon Kang, Jaehyuk Lee, Sowon Kim, Changwoo Park, Damin Lee, Young Yong Kim, Sungjin Jo, Chang Yun Son, Sae Byeok Jo, Dae Sung Chung, Hyojung Cha   +14 more
wiley   +1 more source

Frontier molecular orbital weighted model based networks for revealing organic delayed fluorescence efficiency

Light: Science & Applications
Free of noble-metal and high in unit internal quantum efficiency of electroluminescence, organic molecules with thermally activated delayed fluorescence (TADF) features pose the potential to substitute metal-based phosphorescence materials and serve as ...
Zhaoming He, Hai Bi, Baoyan Liang, Zhiqiang Li, Heming Zhang, Yue Wang   +5 more
doaj   +1 more source

Achieving Diversified Emissive Behaviors of AIE, TADF, RTP, Dual-RTP and Mechanoluminescence from Simple Organic Molecules by Positional Isomerism

, 2022
Organic emitters with multiple emissions such as aggregation-induced emission (AIE), thermally activated delayed fluorescence (TADF), room-temperature phosphorescence (RTP), and mechanoluminescence (ML) are promising candidates for various high-tech ...
Ben Zhong, Tang, Junyi, Gong, Junkai, Liu, Deliang, Wang, Zheng, Zhao, Zhen, Li, Manman, Fang, Dong, Wang, Hongzhuo, Wu, Yu, Xiong   +9 more
core   +1 more source