Results 21 to 30 of about 27,790,840 (315)

Light-activated photocurrent degradation and self-healing in perovskite solar cells

open access: yesNature Communications, 2016
Solution-processed organometallic perovskite solar cells have emerged as one of the most promising thin-film photovoltaic technology. However, a key challenge is their lack of stability over prolonged solar irradiation.
W. Nie   +13 more
semanticscholar   +1 more source

Schiff Bases and Stereocontrolled Formation of Fused 1,3-Oxazolidines from 1-Amino-2-Indanol: A Systematic Study on Structure and Mechanism

open access: yesMolecules, 2023
This paper thoroughly explores the formation of Schiff bases derived from salicylaldehydes and a conformationally restricted amino alcohol (1-amino-2-indanol), as well as the generation of 1,3-oxazolidines, a key heterocyclic core present in numerous ...
Esther Matamoros   +3 more
doaj   +1 more source

A gravitational wave observatory operating beyond the quantum shot-noise limit: Squeezed light in application [PDF]

open access: yes, 2011
Around the globe several observatories are seeking the first direct detection of gravitational waves (GWs). These waves are predicted by Einstein's General Theory of Relativity [Einstein, A., Annalen der Physik 49, 769-822 (1916)] and are generated e.g ...
J. Abadie   +499 more
semanticscholar   +1 more source

Active and durable R2MnRuO7 pyrochlores with low Ru content for acidic oxygen evolution

open access: yesNature Communications, 2023
The production of green hydrogen in water electrolyzers is limited by the oxygen evolution reaction (OER). State-of-the-art electrocatalysts are based on Ir. Ru electrocatalysts are a suitable alternative provided their performance is improved.
Dmitry Galyamin   +17 more
doaj   +1 more source

Light harvesting complexes in chlorophyll c-containing algae.

open access: yesBiochimica et Biophysica Acta - Bioenergetics, 2020
Besides the so-called 'green lineage' of eukaryotic photosynthetic organisms that include vascular plants, a huge variety of different algal groups exist that also harvest light by means of membrane intrinsic light harvesting proteins (Lhc).
C. Büchel
semanticscholar   +1 more source

Electron correlation dynamics in atomic Kr excited by XUV pulses and controlled by NIR laser pulses of variable intensity

open access: yesNew Journal of Physics, 2023
We have investigated the possibility to track and control correlation dynamics of valence electrons in krypton (Kr) initiated by the absorption of one extreme ultraviolet (XUV) photon.
Andreas H Roos   +12 more
doaj   +1 more source

In Operando Angle‐Resolved Photoemission Spectroscopy with Nanoscale Spatial Resolution: Spatial Mapping of the Electronic Structure of Twisted Bilayer Graphene

open access: yesSmall Science, 2021
To pinpoint the electronic and structural mechanisms that affect intrinsic and extrinsic performance limits of 2D material devices, it is of critical importance to resolve the electronic properties on the mesoscopic length scale of such devices under ...
Paulina Majchrzak   +16 more
doaj   +1 more source

White-Light Emission and Structural Distortion in New Corrugated Two-Dimensional Lead Bromide Perovskites.

open access: yesJournal of the American Chemical Society, 2017
Hybrid inorganic-organic perovskites are developing rapidly as high performance semiconductors. Recently, two-dimensional (2D) perovskites were found to have white-light, broadband emission in the visible range that was attributed mainly to the role of ...
Lingling Mao   +4 more
semanticscholar   +1 more source

A Longitudinal Study of E-Cigarette, Cigarette, and Marijuana Use Sequence in Youth

open access: yesTobacco Use Insights, 2022
Objective There is evidence linking youth use of electronic (e-) cigarettes to subsequent cigarette and marijuana use, raising public health concerns.
Erika Westling   +3 more
doaj   +1 more source

Carbon-doped SnS2 nanostructure as a high-efficiency solar fuel catalyst under visible light

open access: yesNature Communications, 2018
Photocatalytic formation of hydrocarbons using solar energy via artificial photosynthesis is a highly desirable renewable-energy source for replacing conventional fossil fuels.
Indrajit Shown   +15 more
semanticscholar   +1 more source

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