Results 131 to 140 of about 4,758 (226)

Molecular design of efficient yellow- to red-emissive alkynylgold(iii) complexes for the realization of thermally activated delayed fluorescence (TADF) and their applications in solution-processed organic light-emitting devices. [PDF]

Chem Sci, 2021
Au-Yeung CC, Li LK, Tang MC, Lai SL, Cheung WL, Ng M, Chan MY, Yam VW.   +7 more
europepmc   +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

Experimental investigation of exciton dynamics of thermally activated delayed fluorescence material exhibiting mono-exponential transient PL decay with sub-microsecond lifetime in solution

Applied Physics Express
DMAc-sFL-PN is a reported emitter exhibiting an ultrashort emission lifetime via the triplet state with high oxygen sensitivity in toluene, explained by a direct singlet-harvesting mechanism.
Shoma Sasaki, Wen-Hao Zhang, Youichi Tsuchiya, Debasish Barman, Chih-Hsin Chen, Chihaya Adachi   +5 more
doaj   +1 more source

A temperature sensor with a wide spectral range based on a dual-emissive TADF dendrimer system

Nature Communications
Dual emission from thermally activated delayed fluorescence (TADF) emitters is often difficult to observe, especially in solution, limited by Kasha’s rule.
Changfeng Si, Tao Wang, Yan Xu, Dongqing Lin, Dianming Sun, Eli Zysman-Colman   +5 more
doaj   +1 more source

Exploring the Versatile Uses of Triplet States: Working Principles, Limitations, and Recent Progress in Phosphorescence, TADF, and TTA. [PDF]

Triplet excited states in organic semiconductors are usually optically dark and long-lived as they have a spin-forbidden transition to the singlet ground state and therefore hinder processes in light-harvesting applications.

core   +1 more source

The Effect of Regioisomerism on the TADF Properties of Organic Dyes

ChemistryEurope
The properties of thermally activated delayed fluorescence (TADF) chromophores are highly dependent on the molecular design. The choice of the donor (D) and acceptor (A) group are as important as the choice of the π‐linker and the substitution positions.
Tim Silies, Silvia Tombolato, Debbie Stappers, Nikos L. Doltsinis, Constantin G. Daniliuc, Fabio Rizzo   +5 more
doaj   +1 more source

Ultrafast spin-flip exciton conversion and narrowband sky-blue luminescence in a fused polycyclic selenaborin emitter

Frontiers in Chemistry
Thermally activated delayed fluorescence (TADF) materials with high photoluminescence quantum yields and fast reverse intersystem crossing (RISC) capabilities are highly desirable for applications in high-efficiency organic light-emitting diodes. Herein,
Sudhir K. Keshri, Guanting Liu, Takuma Yasuda, Takuma Yasuda   +3 more
doaj   +1 more source

Temperature dependency of energy shift of excitonic states in a donor–acceptor type TADF molecule

Nature Communications
In recent years, thermally activated delayed fluorescence (TADF) has attracted intense attention owing to its straightforward application to high-efficiency organic light-emitting diodes.
Youichi Tsuchiya, Keito Mizukoshi, Masaki Saigo, Tomohiro Ryu, Keiko Kusuhara, Kiyoshi Miyata, Ken Onda, Chihaya Adachi   +7 more
doaj   +1 more source

How could ratiometric thermometry with thermally activated delayed fluorescent (TADF) emitters practically work?

Physical Chemistry Chemical Physics
Luminescence thermometry with TADF emitters is only scarcely explored. In this work, photophysical conditions and recommendable read-out strategies for the application of TADF emitters in this application area will be motivated.
openaire   +1 more source

Boron-based donor-spiro-acceptor compounds as novel thermally activated delayed fluorescence (TADF) emitters

, 2021
Thermally activated delayed fluorescence (TADF) emitters played a pivotal role in the improvement of organic light-emitting diode (OLED) technology. Thanks to the participation of triplet excited states in the delayed emission, diodes based on TADF chromophores display high efficiencies comparable to those of diodes that make use of transition metal ...
openaire   +1 more source