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Liquid thermogalvanic cells (LTCs) have emerged as a promising technology for harvesting low-grade heat due to their low cost, compact design, and high thermopower. However, discrepancies exist in quantifying their output power and…

Applied Physics · Physics 2025-04-01 Qiangqiang Huang , Yuchi Chen , Ronggui Yang , Xin Qian

We present transport measurements of electrons on the surface of liquid helium in a microchannel device in which a constriction may be formed by a split-gate electrode. The surface electron current passing through the microchannel first…

Mesoscale and Nanoscale Physics · Physics 2015-05-28 David Rees , Isao Kuroda , Claire Marrache-Kikuchi , Moritz Hofer , Paul Leiderer , Kimitoshi Kono

The performance of organic solar cells strongly depends on the bulk heterojunction (BHJ) morphology of the photoactive layer. This BHJ forms during the drying of the wet-deposited solution, because of physical processes such as…

Materials Science · Physics 2022-09-29 Olivier Ronsin , Jens Harting

The decrease of solar cell efficiency with temperature is a known problem for photovoltaics (PV). Temperature sensitivity can lead to a considerable amount of energy losses over the lifetime of solar panels. In this perspective Hybrid…

Applied Physics · Physics 2023-11-01 Bruno Lorenzi , Paolo Mariani , Andrea Reale , Aldo Di Carlo , Gang Chen , Dario Narducci

Heavy element and helium diffusion are both included for the first time in this series of papers on precise solar models, along with improvements in the input data for nuclear reaction rates, the solar luminosity, the solar age, heavy…

High Energy Physics - Phenomenology · Physics 2008-11-26 John N. Bahcall , M. H. Pinsonneault

Photosynthesis is nature's route to convert intermittent solar irradiation into storable energy, while its use for an industrial energy supply is impaired by low efficiency. Artificial photosynthesis provides a promising alternative for…

Materials Science · Physics 2015-09-16 Matthias M. May , Hans-Joachim Lewerenz , David Lackner , Frank Dimroth , Thomas Hannappel

Copolymers such as PCDTBT (poly(N-9'-heptadecanyl-2,7-carbazole-alt-5,5-(4',7'-di-2-thienyl- 2',1',3'-benzothiadiazole))) are commonly employed as donor material in bulk heterojunction solar cells. Recently, chemical defects such as…

Solar energy is clean and renewable but has a low flux density. The lack of a continuous and reliable power supply reduces their average daily output. Since the infrared part is not utilized to produce electricity, conventional photovoltaic…

Materials Science · Physics 2021-01-01 M. M. Nishchenko , M A Shevchenko , E A Tsapko , A A Frolov , G A Frolov , L. L. Sartinska , A. I. Blanovsky

Coronal loops are basic building blocks of solar atmosphere and are observed on various length scales. However, their formation mechanism is still unclear. In this paper, we present the spectroscopic and imaging observations of small-scale…

Solar and Stellar Astrophysics · Physics 2022-04-06 Girjesh R. Gupta , Sushree S. Nayak

It is currently possible to fabricate crystalline silicon solar cells with the absorber thickness ranging from a few hundreds of micrometers (conventional wafer-based cells) to devices as thin as $1\,\mu\mathrm{m}$. In this work, we use a…

Optics · Physics 2015-05-18 Piotr Kowalczewski , Lucio Claudio Andreani

The convectively driven, weakly magnetized regions of the solar photosphere dominate the Sun's surface at any given time, but the temporal variations of these quiet regions of the photosphere throughout the solar cycle are still not well…

Solar and Stellar Astrophysics · Physics 2025-05-05 James Crowley , Ivan Milic , Gianna Cauzzi , Kevin Reardon

Electronic Energy Transfer (EET) between chromophores is fundamental in many natural light-harvesting complexes, serving as a critical step for solar energy funneling in photosynthetic plants and bacteria. The complicated role of the…

Chemical Physics · Physics 2024-02-05 Colin Coane , Marco Romanelli , Giulia Dall'Osto , Rosa Di Felice , Stefano Corni

The latest solar atmosphere models include non-LTE corrections and 3D hydrodynamic convection simulations. These models predict a significant reduction in the solar metal abundance, which leads to a serious conflict between helioseismic…

Astrophysics · Physics 2008-11-26 Franck Delahaye , Marc Pinsonneault

The influences of work function of transparent conducting oxides (TCO) on the per-formance of organic solar cells, including open circuit voltage, conversion efficiency and fill factor, has been simulated. It is obtained that for non-Ohmic…

Instrumentation and Detectors · Physics 2016-05-31 Aqing Chen , Kaigui Zhu , Qingyi Shao , Zhenguo Ji

The photoelectric heating is believed to be the main heating mechanism in cool HI clouds. The heating rate can be estimated through observations of the [CII] line emission, since this is the main coolant in regions where the photoelectric…

Astrophysics · Physics 2008-11-26 M. Juvela , P. Padoan , R. Jimenez

Concentrating solar power, particularly parabolic trough system with solar concentrations less than 50, requires spectrally selective solar absorbers that are thermally stable at high temperatures of 400degC above to achieve high…

Applied Physics · Physics 2020-12-16 Hassan Alshehri , Qing Ni , Sydney Taylor , Ryan McBurney , Hao Wang , Liping Wang

Many studies of the solar corona have shown that the observed X-ray luminosity is well correlated with the total unsigned magnetic flux. In this paper we present results from the extensive numerical modeling of active regions observed with…

Astrophysics · Physics 2016-08-30 Harry P. Warren , Amy R. Winebarger

Thermal radiation is the dominant heat loss mechanism for receiver units on a parabolic solar collector plant at high temperatures. Reduction of these losses is traditionally achieved through the use of an optically selective coating on the…

Applied Physics · Physics 2020-05-29 V. S Kaluba , Khaled Mohamad , P. Ferrer

Variability of the energy output throughout the day/night poses a major hurdle to the widespread adoption of photovoltaic systems. An integrated photovoltaic (PV) and electrochemical (EC)-storage system offers a solution, but the…

Applied Physics · Physics 2017-07-25 M. Tahir Patel , M. Ryyan Khan , Muhammad A. Alam

The hybrid metal-dielectric nanostructures (HMDN) are promising candidates to address the ohmic loss by conventional nanostructures in photovoltaic applications by strong confinement and high scattering directivity. In this study, we…

Optics · Physics 2025-05-16 Soikot Sarkar , Sajid Muhaimin Choudhury
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