Results 161 to 170 of about 104,594 (185)

Traps, Tail States and Their Consequences on the Open‐circuit Voltage in Organic Solar Cells

Advanced Energy Materials, EarlyView.
It is found that the light‐intensity dependent low‐temperature roll‐off of open‐circuit voltage in organic solar cells is explained by the intrinsic disorder in these devices, which can be either described by the full Gaussian density of states or approximated by a two‐level system, which allows for a more intuitive interpretation.
Tobias Krebs, Clemens Göhler, Martijn Kemerink   +2 more
wiley   +1 more source

Transport Resistance Dominates the Fill Factor Losses in Record Organic Solar Cells

Advanced Energy Materials, EarlyView.
Organic photovoltaics are a promising solar cell technology, but even the record devices with 20% efficiency have significant fill factor losses due to low active layer conductivities. In this Perspective, the authors describe the origin of these losses, discuss experimental methods for their quantification, and explain how to minimize them to optimize
Chen Wang, Roderick C. I. MacKenzie, Uli Würfel, Dieter Neher, Thomas Kirchartz, Carsten Deibel, Maria Saladina   +6 more
wiley   +1 more source

Advancing Carriers Mobility in MnSb2Te4 Thermoelectrics via Tailored Textures and Vacancy Modification

Advanced Energy Materials, EarlyView.
A pioneering post‐treatment is offered to boost the mobility in MnSb2Te4‐based specimen for excellent thermoelectric performance at medium temperature area. As a result, the texture tailoring and vacancy modifying MnSb₂Te₄ specimen reaches a record‐high maximum ZT value of 1.3 at 773 K and an impressive average ZT of 0.7 between 323 and 773 K ...
Xiao Xu, Dasha Mao, Maciej Oskar Liedke, Maik Butterling, Juan Cui, Jinghan Wang, Yiyuan Luo, Zhenhua Ge, Eric Hirschmann, Andreas Wagner, Jiaqing He, Kornelius Nielsch, Ran He   +12 more
wiley   +1 more source

Discerning Performance Bottlenecks of State‐of‐the‐Art Narrow Bandgap Organic Solar Cells

Advanced Energy Materials, EarlyView.
This work quantitatively discerns the loss mechanisms of state‐of‐the‐art low‐bandgap organic solar cells based on BTPV‐4X‐eC9 acceptors. Compared to PM6:Y6, geminate recombination of charge transfer (CT) states governs photocurrent losses. This relates to conformational freedom of these acceptors that restricts their aggregation, and also counteracts ...
Atul Shukla, Manasi Pranav, Guorui He, J. Terence Blaskovits, Davide Mascione, Yonglin Cao, Yufei Gong, Drew B. Riley, Julian A. Steele, Eduardo Solano, Alexander Ehm, Mohammad Saeed Shadabroo, Ardalan Armin, Safa Shoaee, Dietrich R. T. Zahn, Yongfang Li, Lei Meng, Felix Lang, Denis Andrienko, Dieter Neher   +19 more
wiley   +1 more source

Increasing sedentary time, minimum dietary energy requirements, and food security assessment

Applied Economic Perspectives and Policy, EarlyView.
Abstract We compute corrections for sedentary behavior in physical activity levels (PALs) and incorporate them along with corrections for over estimation of basal metabolic rates (BMRs) into threshold caloric intakes, known as minimum dietary energy requirements (MDERs).
Jacob Michels, Yacob Abrehe Zereyesus, John Beghin   +2 more
wiley   +1 more source

Physics-informed machine learning

Nature Reviews Physics, 2021
George Em Karniadakis, Weiliang Xia, Liu Yang   +2 more
exaly  

Doping a Mott insulator: Physics of high-temperature superconductivity

Reviews of Modern Physics, 2006
Xiao-gang Wen
exaly  

Physics of Alfvén waves and energetic particles in burning plasmas

Reviews of Modern Physics, 2016
Fulvio Zonca, Yonghua Wang, Liu Chen
exaly