Results 81 to 90 of about 171,129 (289)

Uncovering the Origin of Efficiency Roll‐Off in TADF OLEDs

Advanced Functional Materials, EarlyView.
OLEDs based on thermally activated delayed fluorescent (TADF) materials often suffer from a severe drop in efficiency at high brightness levels. This work presents a technique to uncover the source of this efficiency drop, and quantifies the exciton‐exciton and exciton‐polaron annihilation processes responsible for efficiency losses in our TADF OLEDs ...
Liam G. King, Kou Yoshida, Arvydas Ruseckas, Ifor D. W. Samuel   +3 more
wiley   +1 more source

Low temperature fullerene encapsulation in single wall carbon nanotubes: synthesis of N@C$_{60}$@SWCNT

, 2003
High filling of single wall carbon nanotubes (SWCNT) with C$_{60}$ and C$_{70}$ fullerenes in solvent is reported at temperatures as low as 69 $^{o}$C. A 2 hour long refluxing in n-hexane of the mixture of the fullerene and SWCNT results in a high yield ...
A Jánossy, Abe, Almeida Murphy, Bandow, Berber, Dresselhaus, F Fülöp, F Simon, Fink, H Kuzmany, H Peterlik, H Rauf, Harneit, Hirahara, Iijima, J Bernardi, Kataura, Kataura, Kuzmany, L Korecz, Liu, Monthioux, Peterlik, Pfeiffer, Pichler, Pietzak, Rinzler, Smith, T Pichler, Tang, Waiblinger, Yudasaka   +31 more
core   +1 more source

Disordered Carbon Shells Enable Shape Dependent Fluorescence Enhancement in Nanodiamond Quantum Sensors Revealed by Correlative TEM–Fluorescence Microscopy

Advanced Functional Materials, EarlyView.
Molten KNO2 treatment induces a lowrefractive index disordered carbon shell on fluorescent nanodiamonds, enhancing fluorescence emission while preserving spin coherence. Machine learningassisted correlative TEMPL enables direct single‐particle resolution of this enhancement relative to air‐oxidized nanodiamonds of similar morphology, establishing a ...
Parkarsh Kumar, Tom Vaillant, Mehran Kianinia, Haotian Wen, Adam Stewart, Peter J. Reece, Hugues A. Girard, Jean‐Charles Arnault, Huan‐Cheng Chang, Igor Aharonovich, Shery L. Y. Chang   +10 more
wiley   +1 more source

In‐Situ Solution Complexation for n‐Type Surface‐Energetics Reconstruction in 2.0 eV Ultra‐Wide‐Bandgap Perovskite Solar Cells

Advanced Functional Materials, EarlyView.
A reactive in situ solution complexation strategy reconstructs the surface of 2.0 eV ultra‐wide‐bandgap perovskites via proton transfer. This chemical modulation eliminates metallic defects and induces a degenerate‐like n‐type surface, establishing an Ohmic tunneling contact.
Saemon Yoon, Han‐Gyun Lim, Jinyoung Kim, Gyu Min Kim, Seojun Lee, Jun Ryu, SungWon Cho, Jincheol Kim, Hyosung Choi, Jung Sang Cho, Jongsung Park, Dong‐Won Kang   +11 more
wiley   +1 more source

Voltage-tunable spin resonance in quantum phase-separated material

APL Materials
The voltage control of spin and charge degrees of freedom in complex materials is a cornerstone for the realization of advanced electronic devices with enhanced functionalities.
Gabriel B. Gomide, Diego Carranza-Celis, Guilherme Kuhl, Marcelo Knobel, Juan Gabriel Ramírez, Diego Muraca   +5 more
doaj   +1 more source

Monitoring of Fe(II) Spin Transition in Cu(II)-Doped Spin-Crossover Nanoparticles

Molecules
Experimental protocols based on Electron Paramagnetic Resonance (EPR) and Raman spectroscopy are presented for the investigation of the Fe(II) spin transition in Cu(II)-doped 1-D spin-crossover (SCO) nanoparticles of the type [Fe1−xCux(NH2trz)3]Br2 where
Alexander Charitos, Vassilis Tangoulis, John Parthenios, Ondrej Malina, Radim Mach, Nikolaos Ioannidis, Nikolia Lalioti   +6 more
doaj   +1 more source

Atomic-scale imaging of a 27-nuclear-spin cluster using a single-spin quantum sensor

, 2019
Nuclear magnetic resonance (NMR) is a powerful method for determining the structure of molecules and proteins. While conventional NMR requires averaging over large ensembles, recent progress with single-spin quantum sensors has created the prospect of ...
Abobeih, M. H., Bakker, M. A., Bartling, H. P., Bradley, C. E., Degen, M. J., Markham, M., Randall, J., Taminiau, T. H., Twitchen, D. J.   +8 more
core   +1 more source

Single‐ and Dual‐Atom Configurations in Atomically Dispersed Catalysts for Lithium–Sulfur Batteries

Advanced Functional Materials, EarlyView.
Single‐atom and dual‐atom‐based atomically dispersed catalysts (ADCs) effectively address the shuttle effect and sluggish redox kinetics in Li–S batteries. With nearly 100% atomic utilization and tunable coordination environments, ADCs enhance LiPSs adsorption, lower conversion barriers, and accelerate sulfur redox reactions.
Haoyang Xu, Zhenfeng Li, Yue Fei, Ali Mohammadi, Ge Li   +4 more
wiley   +1 more source

Location of the cross-β structure in prion fibrils: A search by seeding and electron spin resonance spectroscopy. [PDF]

Protein Sci, 2022
Chu BK, Tsai RF, Hung CL, Kuo YH, Chen EH, Chiang YW, Chan SI, Chen RP.   +7 more
europepmc   +1 more source

Molecular quantum spin network controlled by a single qubit

, 2017
Scalable quantum technologies will require an unprecedented combination of precision and complexity for designing stable structures of well-controllable quantum systems.
Azarkh, Mykhailo, Dasari, Durga Bhaktavatsala Rao, de Oliveira, Felipe Fávaro, Drescher, Malte, Finkler, Amit, Kern, Bastian, Kern, Klaus, Oeckinghaus, Thomas, Schlipf, Lukas, Ternes, Markus, Wrachtrup, Jörg, Xu, Kebiao, Zappe, Andrea   +12 more
core   +1 more source