Results 41 to 50 of about 21,084 (341)

Persistent Dimer Emission in Thermally Activated Delayed Fluorescence Materials [PDF]

The Journal of Physical Chemistry C, 2019
We expose significant changes in the emission color of carbazole-based thermally activated delayed fluorescence (TADF) emitters that arise from the presence of persistent dimer states in thin films and organic light-emitting diodes (OLEDs). Direct photoexcitation of this dimer state in 1,2,3,5-tetrakis(carbazol-9-yl)-4,6-dicyanobenzene (4CzIPN) reveals
Marc K. Etherington, Nadzeya A. Kukhta, Heather F. Higginbotham, Andrew Danos, Aisha N. Bismillah, David R. Graves, Paul R. McGonigal, Nils Haase, Antonia Morherr, Andrei S. Batsanov, Christof Pflumm, Vandana Bhalla, Martin R. Bryce, Andrew P. Monkman   +13 more
openaire   +5 more sources

Insights into enhanced electrochemiluminescence of a multiresonance thermally activated delayed fluorescence molecule

SmartMat, 2023
The electrochemiluminescence (ECL) behavior of a multiresonance thermally activated delayed fluorescence molecule has been investigated for the first time by means of ECL‐voltage curves, newly designed ECL‐time observatory, and ECL spectroscopy.
Liuqing Yang, Lihui Dong, David Hall, Mahdi Hesari, Yoann Olivier, Eli Zysman‐Colman, Zhifeng Ding   +6 more
doaj   +1 more source

Comparative study of thermally activated delayed fluorescent properties of donor–acceptor and donor–acceptor–donor architectures based on phenoxazine and dibenzo[a,j]phenazine

Beilstein Journal of Organic Chemistry, 2022
A new thermally activated delayed fluorescence (TADF) compound based on a donor–acceptor (D–A) architecture (D = phenoxazine; A = dibenzo[a,j]phenazine) has been developed, and its photophysical properties were characterized.
Saika Izumi, Prasannamani Govindharaj, Anna Drewniak, Paola Zimmermann Crocomo, Satoshi Minakata, Leonardo Evaristo de Sousa, Piotr de Silva, Przemyslaw Data, Youhei Takeda   +8 more
doaj   +1 more source

Triplet-Tuning: A Novel Family of Non-Empirical Exchange-Correlation Functionals [PDF]

, 2019
In the framework of DFT, the lowest triplet excited state, T$_1$, can be evaluated using multiple formulations, the most straightforward of which are UDFT and TDDFT.
Lin, Zhou, Van Voorhis, Troy
core   +4 more sources

Narrowband Emissive Thermally Activated Delayed Fluorescence Materials

Advanced Optical Materials, 2022
AbstractOrganic thermally activated delayed fluorescence (TADF) materials have attracted significant research interest in the field of organic electronics because of their inherent advantage of 100% exciton utilization capability in organic light‐emitting diodes (OLEDs) without the use of noble metals.
Hyung Jong Kim, Takuma Yasuda
openaire   +1 more source

Operational lifetimes of organic light-emitting diodes dominated by Förster resonance energy transfer

Scientific Reports, 2017
Organic light-emitting diodes are a key technology for next-generation information displays because of their low power consumption and potentially long operational lifetimes.
Hirohiko Fukagawa, Takahisa Shimizu, Yukiko Iwasaki, Toshihiro Yamamoto   +3 more
doaj   +1 more source

High efficiency blue organic light-emitting diodes with below-bandgap electroluminescence

Nature Communications, 2021
Thermally activated delayed fluorescence organic light-emitting diodes (TADF-OLEDs) rely on high triplet energy interlayers to confine excitons, which results in reduced performance.
Maria Vasilopoulou, Abd. Rashid bin Mohd Yusoff, Matyas Daboczi, Julio Conforto, Anderson Emanuel Ximim Gavim, Wilson Jose da Silva, Andreia Gerniski Macedo, Anastasia Soultati, George Pistolis, Fabio Kurt Schneider, Yifan Dong, Polina Jacoutot, Georgios Rotas, Jin Jang, Georgios C. Vougioukalakis, Christos L. Chochos, Ji-Seon Kim, Nicola Gasparini   +17 more
doaj   +1 more source

Pyridine-functionalized carbazole donor and benzophenone acceptor design for thermally activated delayed fluorescence emitters in blue organic light emitting diodes [PDF]

, 2018
The authors thank the Marie Skłodowska-Curie Individual Fellowship (MCIF, no 749557), the Leverhulme Trust (RPG-2016-047) and EPSRC (EP/P010482/1) for financial support.In this paper we report a new molecular design approach for blue emitting thermally ...
Pachai Gounder, Rajamalli, Rota Martir, Diego, Zysman-Colman, Eli   +2 more
core   +1 more source

Substituent effect on TADF properties of 2-modified 4,6-bis(3,6-di-tert-butyl-9-carbazolyl)-5-methylpyrimidines

Beilstein Journal of Organic Chemistry, 2022
The interest in organic materials exhibiting thermally activated delayed fluorescence (TADF) significantly increased in recent years owing to their potential application as emitters in highly efficient organic light emitting diodes (OLEDs).
Irina Fiodorova, Tomas Serevičius, Rokas Skaisgiris, Saulius Juršėnas, Sigitas Tumkevicius   +4 more
doaj   +1 more source

Thermally Activated Delayed Fluorescence Materials Based on Homoconjugation Effect of Donor–Acceptor Triptycenes [PDF]

, 2015
Donor–acceptor triptycences, TPA-QNX(CN)2 and TPA-PRZ(CN)2, were synthesized and their emissive properties were studied. They exhibited a blue-green fluorescence with emission lifetimes on the order of a microsecond in cyclohexane at room temperature ...
Baldo, Marc A, Chae, Hyun Sik, Kawasumi, Katsuaki, Swager, Timothy M, Van Voorhis, Troy, Wu, Tony C, Zhu, Tianyu   +6 more
core   +3 more sources