Results 211 to 220 of about 5,621 (248)

Chemical Tailoring Assisted non‐TADF to TADF Switching in Carbazole‐Benzophenone Emitter – An In‐silico Investigation

ChemPhysChem, 2023
AbstractOrganic light‐emitting diodes (OLEDs) have become one of the most popular lighting technologies since they offer several advantages over conventional devices. In carbazole‐benzophenone (CzBP) OLED devices, the polymeric form of the compound is previously reported to be Thermally Activated Delayed Fluorescence (TADF)‐active (ΔEST ≈0.12 eV ...
Aparna G. Nair, Arathi Das, Nayana Edavan Chathoth, Manash Pratim Sarmah, Padmesh Anjukandi   +4 more
openaire   +2 more sources

Ultrapure Blue Thermally Activated Delayed Fluorescence (TADF) Emitters Based on Rigid Sulfur/Oxygen-Bridged Triarylboron Acceptor: MR TADF and D–A TADF

The Journal of Physical Chemistry Letters, 2022
Organic light-emitting diodes (OLEDs) still face a significant challenge in finding blue thermally activated delayed fluorescence (TADF) emitters that can achieve narrowband emission and high efficiency. In this work, we successfully design and synthesize a novel kind of TADF emitters based on rigid sulfur/oxygen-bridged triarylboron acceptor for ...
Honglei Gao, Shaogang Shen, Yuanyuan Qin, Guanhao Liu, Teng Gao, Xiangyu Dong, Zhi Pang, Xin Xie, Pengfei Wang, Ying Wang   +9 more
openaire   +2 more sources

Acceptor modulation for blue and yellow TADF materials and fabrication of all-TADF white OLED

Materials Chemistry Frontiers, 2022
4,4′-(4-Phenylpyridine-2,6-diyl)dibenzonitrile is designed as an acceptor to develop a sky-blue TADF emitter that exhibits a fluorescence rate constant of 10 7 s −1 and high EQEs of 25.6% and 18.5% in sky-blue and all-TADF white organic light-emitting ...
Ruizhi Dong, Di Liu, Jiuyan Li, Mengyao Ma, Yongqiang Mei, Deli Li, Jingyang Jiang   +6 more
openaire   +1 more source

TADF sensitization targets deep-blue

Nature Photonics, 2021
Two independent studies employing the same narrowband deep-blue emitter, ν-DABNA, but different energy transfer schemes, achieve efficient and stable deep-blue electroluminescence.
Dongdong Zhang, Lian Duan
openaire   +1 more source

Intermolecular TADF: bulk and interface exciplexes

Journal of Materials Chemistry C, 2022
Intermolecular TADF including bulk and interface exciplexes, can be used as emitters to achieve high efficiency, and also as hosts to extend the device lifetime by reducing the triplet exciton concentration and improving charge balance.
Jiannan Gu, Zhenyu Tang, Haoqing Guo, Ye Chen, Jing Xiao, Zhijian Chen, Lixin Xiao   +6 more
openaire   +1 more source

Outstanding Circularly Polarized TADF in Chiral Cu(I) Emitters: From Design to Application in CP-TADF OLEDs

Angewandte Chemie - International Edition
AbstractLow‐cost molecular emitters that merge circularly polarized luminescence (CPL) and thermally activated delayed fluorescence (TADF) properties are attractive for many high‐tech applications. However, the design of such emitters remains a difficult task.
Hong Meng, Alexander V Artem'ev, Lingqiang Meng   +2 more
exaly   +3 more sources

Understanding the Fluorescence of TADF Light-Emitting Dyes

The Journal of Physical Chemistry A, 2016
In order to afford in a controlled fashion fine-tuning of the color and the intensity of the emitted light of potential fluorophores for organic light-emitting diodes (OLED), directed molecular design based on a donor-spacer-acceptor model is undertaken. One way of increasing emission efficiency is triplet harvesting.
Valchanov, G., Ivanova, A., Tadjer, A., Chercka, D., Baumgarten, M.   +4 more
openaire   +3 more sources

Exciplex: An Intermolecular Charge-Transfer Approach for TADF

ACS Applied Materials & Interfaces, 2018
Organic materials that display thermally activated delayed fluorescence (TADF) are a striking class of functional materials that have witnessed a booming progress in recent years. In addition to pure TADF emitters achieved by the subtle manipulations of intramolecular charge transfer processes with sophisticated molecular structures, a new class of ...
Monima Sarma, Ken-Tsung Wong
openaire   +2 more sources

Fundamental theories of TADF

2022
Dan Wang, Qisheng Zhang
openaire   +1 more source

Abnormal Anti‐Kasha Emission and TADF in Anionic Cycloarylenes

Angewandte Chemie
AbstractIncorporation of non‐benzoid rings into cycloarylenes significantly alters their molecular geometry and optical behavior. Recently, we synthesized two ferrocene‐doped cycloarylenes, (CpFe)3‐1 and (CpFe)4‐2. However, the {FeCp} moieties in these architectures limited their optical properties.
Jianwei Liang, Lingyun Zhu, Yuanping Li, Gang Xu, Haixiang Han, Yuanming Li, Zheng Zhou   +6 more
openaire   +2 more sources