Results 81 to 90 of about 15,881 (262)

When Poor Exciton Dissociation Limits Photocurrents in Organic Solar Cells: Why Low Offset Non‐Fullerene Acceptor Blends Can't Be Efficient

Advanced Materials, EarlyView.
The energetic offset between the donor and the acceptor components in organic photoactive layers is central to the tradeoff between photovoltage and photocurrent losses. This Perspective covers the most important issues surrounding this topic in non‐fullerene acceptor blends, from the difficulty of accurately determining state energies and driving ...
Dieter Neher, Manasi Pranav
wiley   +1 more source

Role of Magnetic Arcades in Explaining the Puzzle of the Gamma-Ray Emission from the Solar Disk

The Astrophysical Journal
The interpretation of gamma-ray emission originating from the solar disk (0.5° in angular size) as due to the interaction of Galactic Cosmic Rays (GCRs) with the solar atmosphere has remained a central challenge in solar physics.
Eleonora Puzzoni, Federico Fraschetti, József Kóta, Joe Giacalone   +3 more
doaj   +1 more source

Effect of the Irradiation on Optical and Electrical Properties of Triple-Junction Flexible Thin Solar Cells for Space Applications

Frontiers in Physics, 2019
The most common multi-junction solar cell arrangement employs the InGaP/InGaAs/Ge configuration, which is usually exploited for high-efficiency space applications.
Jacopo Parravicini, Francesco Arcadi, Alessia Le Donne, Roberta Campesato, Mariacristina Casale, Erminio Greco, Simona Binetti   +6 more
doaj   +1 more source

Organic Materials of Tomorrow: Horizons of Artificial Intelligence

Advanced Materials, EarlyView.
This review examines machine learning techniques accelerating the discovery of organic semiconductors by linking molecular structure to properties. Key methods include graph neural networks, generative models, and active learning. Applications to organic photovoltaics demonstrate practical impact.
Harold Mena, J. Terence Blaskovits, Kun‐Han Lin, Denis Andrienko   +3 more
wiley   +1 more source

Small-scale Inhomogeneity Effects on Coherent Solar Radio Emission

The Astrophysical Journal
The coherent radio emission mechanism of solar radio bursts (SRBs) is one of the most complicated and controversial topics in solar physics. To clarify the mechanism(s) of different types of SRBs, (radio-) wave excitation by energetic electrons in ...
Xiaowei Zhou, Patricio A. Muñoz, Jan Benáček, Lijie Zhang, Dejin Wu, Ling Chen, Zongjun Ning, Jörg Büchner   +7 more
doaj   +1 more source

Phase Engineering of Atomically Precise Nanoclusters (APNCs) of Gold and Beyond

Advanced Materials, EarlyView.
Engineering the structural phase of materials is of paramount importance for both fundamental research and practical applications. In this Review, we summarize the recent progress in controlling the phases of atomically precise nanoclusters (APNCs) of gold, silver and copper, as well as bimetallic systems. The phase‐enabled material properties of APNCs
Yitong Wang, Avirup Sardar, Weijie Ji, Zhongyu Liu, Rongchao Jin   +4 more
wiley   +1 more source

Peak-intensity energy spectra of intense solar energetic electron events measured with Solar Orbiter in 2020–2022

Astronomy & Astrophysics
Context. The energy spectra of energetic particles offer valuable insights into particle acceleration processes. While the commonly observed spectral breaks in solar energetic electron (SEE) spectra could serve as fingerprints of the acceleration process,
Fedeli Annamaria, Dresing Nina, Gieseler Jan, Warmuth Alexander, Schuller Frederic, Gómez-Herrero Raúl, Jebaraj Immanuel Christopher, Espinosa Francisco, Vainio Rami   +8 more
doaj   +1 more source

Large‐Scale Determination of Frontier Orbital Energies of Disordered Small‐Molecule Organic Semiconductors Using Exciplex Emission Spectra

Advanced Materials, EarlyView.
ABSTRACT Accurately knowing the frontier orbital energies of the structurally disordered small‐molecule organic semiconductors that are used in optoelectronic devices such as organic light‐emitting diodes is required to rationally improve their performance. Here, we show that these energies can be deduced with a large accuracy from the peak energies of
Christian B. McDonald, Hiroki Tomita, Giacomo Cotelli, Louka L. Brüll, Nanno G. de Rooij, Lucas R.L. Norg, Milo Clément, Reinder Coehoorn   +7 more
wiley   +1 more source

Organic–Inorganic Hybrid Hole‐Selective Layer Interface Engineering for Enhanced Photoelectrochemical Water Oxidation on Bismuth Vanadate Photoanodes

Advanced Materials, EarlyView.
In this research the [4‐(3,6‐dimethyl‐9H‐carbazol‐9‐yl)butyl] phosphonic acid (Me‐4PACz) self‐assembled monolayers (SAMs) to bond with NiOx is first designed to be the organic‐inorganic hybrid hole‐selective layers, which promotes the BiVO4 photoanodes photoelectrochemical water splitting performance with 6.9 mA cm−2 photocurrent at 1.23 VRHE and at ...
Kaige Tian, Dingyanyan Zhou, Jiafan Zhang, Zhennan Wang, Yujin Ji, Youyong Li, Hui Li, Zhong‐Yong Yuan, Shuit‐Tong Lee, Tianyi Ma, Junqing Yan   +10 more
wiley   +1 more source

The 3He-rich SEP on Event 2024 April 1 at 27 Solar Radii—Indications of Acceleration by Waves and Implications of Coronal Source Location

The Astrophysical Journal
Parker Solar Probe (PSP) observations of a small dispersive event on 2024 April 1 reveal highly enriched ^3 He abundance in the suprathermal energy range (40–250 keV nucleon ^−1 ). Time dispersion observed in this impulsive solar energetic particle (SEP)
D. G. Mitchell, D. Lario, N. E. Raouafi, G. M. Mason, A. Kouloumvakos, H. Collier, E. C. Roelof, G. Berland, D. J. McComas, C. M. S. Cohen, M. E. Hill, R. L. McNutt Jr, P. S. Mostafavi, J. C. Kasper, S. D. Bale, M. Pulupa, P. L. Whittlesey   +16 more
doaj   +1 more source