Results 191 to 200 of about 335,375 (390)

Hubble Redshift

open access: yes, 2000
8 pages, 4 ...
Sumner, W. Q., Vityaev, E. E.
openaire   +2 more sources

Radical TADF: Quartet‐Derived Luminescence with Dark TEMPO

open access: yesAdvanced Materials, EarlyView.
A new class of luminescent organic quantum materials is introduced, formed by attaching a stable radical to TADF chromophores. Due to ferromagnetic exchange coupling, a high‐spin quartet state forms upon excitation, which can thermally access a bright state.
Sebastian Gorgon   +8 more
wiley   +1 more source

A test for the redshift dependence of $$\sigma _8$$ σ 8 using $$f\sigma _8$$ f σ 8 measurements

open access: yesEuropean Physical Journal C: Particles and Fields
We search for a redshift dependence of $$\sigma _8^0$$ σ 8 0 using 23 growth rate measurements from redshift space distortions and peculiar velocity measurements as a consistency check of $$\Lambda $$ Λ CDM.
Siddhant Manna, Shantanu Desai
doaj   +1 more source

Ultrafast Light‐Driven Electronic and Structural Changes in LaFeO3 Perovskites Probed by Femtosecond X‐Ray Absorption Spectroscopy

open access: yesAdvanced Materials, EarlyView.
Femtosecond X‐ray absorption spectroscopy (fs‐XAS) at PAL‐XFEL captures ultrafast electronic and structural dynamics in epitaxial LaFeO3 thin films. Combined with DFT and multiplet calculations, the study reveals photoinduced ligand‐to‐metal charge transfer, followed by polaron formation and reduced oxygen 2p‐iron 3d hybridization, explaining key ...
Masoud Lazemi   +14 more
wiley   +1 more source

Simulating Continuum-based Redshift Measurement in the Roman’s High Latitude Spectroscopic Survey

open access: yesThe Astronomical Journal
We investigate the capability of the Nancy Grace Roman Space Telescope’s (Roman) Wide-Field Instrument G150 slitless grism to detect red, quiescent galaxies based on the current reference survey.
Zhiyuan Guo   +3 more
doaj   +1 more source

Fast‐Charging Phosphorus Anodes Enabled by Fluorinated Weakly Solvated Electrolytes for Stable and High‐Rate Lithium Storage

open access: yesAdvanced Materials, EarlyView.
A universal weakly‐solvated electrolyte design principle is established for phosphorus‐based anodes through systematic evaluation. Based on this criterion, the fluorinated solvent of FEC emerges as the optimal co‐solvent, effectively suppressing the dissolution of lithium polyphosphides while enhancing desolvation/charge‐transfer kinetics and ...
Huixian Xie   +8 more
wiley   +1 more source

The spatial distribution of GRBs

open access: yesActa Polytechnica
We analysed the different aspects of the spatial distribution of 542 Gamma-Ray Bursts with precisely determined positions and spectroscopic redshifts. The data were divided according to the origin of the redshift (afterglow or host galaxy).
Zsolt Bagoly   +3 more
doaj   +1 more source

Unveiling the Aging Effect at the Interface of N719 Dye‐Sensitized Solar Cells

open access: yesAdvanced Materials Interfaces, EarlyView.
Iodide is incorporated into the N719 layer through two mechanisms: the known ligand exchange of NCS with I and a second yet unknown mechanism which significantly blocks the charge regeneration process of the N719 dye contributing to the cell degradation.
Sunita G. Adhikari   +3 more
wiley   +1 more source

Modulating Polaron Behavior in PM6 Blends with Nonfullerene and Fullerene Acceptors: The Importance of Singlet Energy Transfer

open access: yesAdvanced Materials Interfaces, EarlyView.
Transient absorption spectroscopy is employed to demonstrate that nonfullerene acceptors inhibit the formation of bound polaron pairs in conjugated polymers, which would otherwise undergo rapid relaxation back to the ground state. Instead, efficient energy transfer from the polymer to the non‐fullerene acceptor takes place, facilitating high charge ...
Rebecca Harris   +4 more
wiley   +1 more source

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