Results 11 to 20 of about 43,621 (161)

245 MHz bandwidth organic light-emitting diodes used in a gigabit optical wireless data link

open access: yesNature Communications, 2020
Organic LEDs (OLEDs) have generally been considered to be slow devices. Through engineering the structure and materials of OLEDs, the authors achieve a breakthrough in the high-speed operation of OLEDs and demonstrate a 1 Gbps optical wireless link using
Kou Yoshida   +8 more
doaj   +1 more source

Exploring the possibility of using fluorine-involved non-conjugated electron-withdrawing groups for thermally activated delayed fluorescence emitters by TD-DFT calculation

open access: yesBeilstein Journal of Organic Chemistry, 2021
The trifluoromethyl group has been previously explored as a non-conjugated electron-withdrawing group in donor–acceptor thermally activated delayed fluorescence (TADF) emitters.
Dongyang Chen, Eli Zysman-Colman
doaj   +1 more source

Towards dielectric relaxation at a single molecule scale

open access: yesScientific Reports, 2022
Dielectric relaxation lies at the heart of well-established techniques of dielectric spectroscopy essential to diverse fields of research and technology. We report an experimental route for increasing the sensitivity of dielectric spectroscopy ultimately
Vitalii Stetsovych   +8 more
doaj   +1 more source

Room Temperature Polariton Lasing in Ladder‐Type Oligo(p‐Phenylene)s with Different π‐Conjugation Lengths

open access: yesAdvanced Photonics Research, 2021
Polariton lasing is coherent emission that originates from macroscopic accumulation of polariton population in the ground state and is a promising route toward efficient coherent light sources as population inversion is not necessary. Unlike most Wannier–
Mengjie Wei   +5 more
doaj   +1 more source

Organic photovoltaics for simultaneous energy harvesting and high-speed MIMO optical wireless communications

open access: yesLight: Science & Applications, 2021
We show that organic photovoltaics (OPVs) are suitable for high-speed optical wireless data receivers that can also harvest power. In addition, these OPVs are of particular interest for indoor applications, as their bandgap is larger than that of silicon,
Iman Tavakkolnia   +7 more
doaj   +1 more source

Ionic multiresonant thermally activated delayed fluorescence emitters for light emitting electrochemical cells

open access: yesBeilstein Journal of Organic Chemistry, 2022
We designed and synthesized two new ionic thermally activated delayed fluorescent (TADF) emitters that are charged analogues of a known multiresonant TADF (MR-TADF) compound, DiKTa.
Merve Karaman   +10 more
doaj   +1 more source

Ohmic Electron Injection into Organic Semiconductors by Solution‐Processed and Evaporated Organic Interlayers

open access: yesAdvanced Materials Interfaces, 2023
Efficient electron injection from an electrode into an organic semiconductor remains a problem to solve for efficient organic semiconductor devices. In this work, a general method is presented to form an ohmic electron contact by inserting a thin organic
David Trieb   +2 more
doaj   +1 more source

Sensing of explosive vapor by hybrid perovskites: Effect of dimensionality

open access: yesAPL Materials, 2020
Lead halide perovskites are very promising materials for many optoelectronic devices. They are low cost, photostable, and strongly photoluminescent materials, but so far have been little studied for sensing. In this article, we explore hybrid perovskites
J. R. Harwell   +6 more
doaj   +1 more source

Nonthermal Equilibrium Process of Charge Carrier Extraction in Metal/Insulator/Organic Semiconductor/Metal (MIOM) Junction

open access: yesMagnetochemistry, 2023
This paper presents the concept and experimental evidence for the nonthermal equilibrium (NTE) process of charge carrier extraction in metal/insulator/organic semiconductor/metal (MIOM) capacitors.
Hiroyuki Tajima   +2 more
doaj   +1 more source

Recent developments in enantioselective photocatalysis

open access: yesBeilstein Journal of Organic Chemistry, 2020
Enantioselective photocatalysis has rapidly grown into a powerful tool for synthetic chemists. This review describes the various strategies for creating enantioenriched products through merging enantioselective catalysis and photocatalysis, with a focus ...
Callum Prentice   +3 more
doaj   +1 more source

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