Results 61 to 70 of about 4,660 (240)

Open questions on the photophysics of thermally activated delayed fluorescence

Communications Chemistry, 2021
The process of thermally activated delayed fluorescence (TADF) converts non-radiative triplet states into emissive singlet states. Herein we outline the fundamentals of TADF, some of the recent progress in understanding the key material properties ...
Julien Eng, Thomas J. Penfold
doaj   +1 more source

Chiral Carbene Zinc(II) Dithiolates: Efficient TADF Emitters Showing Circularly Polarized Luminescence

, 2023
Luminescent metal complexes based on earth abundant elements are a valuable target to substitute 4d/5d transition metal complexes as triplet emitters in advanced photonic applications. Whereas Cu(I) complexes have been thoroughly investigated in the last
Jasper, Guhl, Benjamin, Hupp, Ondřej, Mrózek, Markus, Putscher, Christel, Marian, Mousree, Mitra, Andrey, Belyaev, Andreas, Steffen   +7 more
core   +1 more source

Synthesis and characterization of imidazole derivatives with thermally activated delayed fluorescent (TADF) properties

, 2023
reservedIl presente lavoro di tesi rientra nell’ambito di ricerca riguardante l’utilizzo di composti organici TADF (thermally activated delayed fluorescence) per elettrochemiluminescenza e chemiluminescenza rigenerativa.
PELOROSSO, ELISA
core  

Unified Analytical Framework for Understanding the Operational Stability of Blue Phosphorescent OLEDs: Quantitative Insights Into Exciton Recycling and Bimolecular Interactions

Advanced Functional Materials, EarlyView.
Blue phosphorescent OLEDs remain limited by poor operational stability. Here, a unified analytical framework integrating transient photoluminescence and magneto‐electroluminescence is developed to correlate intrinsic material photophysics with electrically driven degradation.
Hakjun Lee, Bum June Park, Taekyung Kim
wiley   +1 more source

Promising interlayer sensitization strategy for the construction of high-performance blue hyperfluorescence OLEDs

Light: Science & Applications
Multi-resonance thermally activated delayed fluorescence (MR-TADF) materials are promising candidates for organic light-emitting diodes (OLEDs) with narrow electroluminescence (EL) spectra.
Jianghui Wang, Peng Zou, Letian Chen, Zhentao Bai, Hao Liu, Wen-Cheng Chen, Yanping Huo, Ben Zhong Tang, Zujin Zhao   +8 more
doaj   +1 more source

Excitonic Coupling of a TADF Assistant Dopant and a Multi‐Resonance TADF Emitter

Advanced Optical Materials
AbstractThe excitation energy transfer (EET) between two conformers of the deep‐blue thermally activated delayed fluorescence emitter DBA‐BTICz and the multi‐resonance fluorescence emitter ν‐DABNA is studied by means of quantum chemistry according to Fermi's Golden Rule.
Simon Metz, Christel M. Marian
openaire   +1 more source

Role of the Recombination Zone in Organic Light‐Emitting Devices

Advanced Materials, EarlyView.
This review summarizes the critical role of the recombination zone in organic light‐emitting diodes (OLEDs). We highlight that broadening the recombination zone in OLEDs based on emissive layers with balanced charge transport and high photoluminescence quantum yields provides a promising route toward achieving both long operational lifetime and high ...
Yungui Li, Karl Leo
wiley   +1 more source

Versatile boron‐based thermally activated delayed fluorescence materials for organic light‐emitting diodes

Aggregate, 2022
During the last few years, organoboron‐based thermally activated delayed fluorescence (TADF) materials have received extensive attention in optoelectronic area, owing to the unique electronegativity of boron atom.
Jianmei Han, Yanying Chen, Nengquan Li, Zhongyan Huang, Chuluo Yang   +4 more
doaj   +1 more source

When Poor Exciton Dissociation Limits Photocurrents in Organic Solar Cells: Why Low Offset Non‐Fullerene Acceptor Blends Can't Be Efficient

Advanced Materials, EarlyView.
The energetic offset between the donor and the acceptor components in organic photoactive layers is central to the tradeoff between photovoltage and photocurrent losses. This Perspective covers the most important issues surrounding this topic in non‐fullerene acceptor blends, from the difficulty of accurately determining state energies and driving ...
Dieter Neher, Manasi Pranav
wiley   +1 more source

Narrowband Deep-Blue Multi-Resonance Induced Thermally Activated Delayed Fluorescence: Insights from the Theoretical Molecular Design

Molecules, 2022
Multi-resonance thermal activated delayed fluorescence (MR-TADF) has been promising with large oscillator strength and narrow full width at half maxima of luminescence, overcoming the compromise of emission intensity and energy criteria of traditional ...
Yuting Wu, Yanan Zhu, Zewei Zhang, Chongguang Zhao, Junpeng He, Chaoyi Yan, Hong Meng   +6 more
doaj   +1 more source