Results 181 to 190 of about 1,352,066 (287)

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

Spectral theory of random self-adjoint operators

, 1989
L. Pastur
semanticscholar   +1 more source

A useful formula for periodic Jacobi matrices on trees. [PDF]

Proc Natl Acad Sci U S A
Banks J, Breuer J, Garza-Vargas J, Seelig E, Simon B.   +4 more
europepmc   +1 more source

Unique Na5−xSbSe Phase Enables High‐Rate Performance of Sb2Se3 Anodes in Na‐Ion Batteries

Advanced Energy Materials, EarlyView.
The (de)sodiation mechanism of Sb2Se3 is revealed through advanced operando techniques and ab initio simulations and underscores the value of complementary methods in exploring battery mechanisms. A new Na5−xSbSe phase is identified as the final sodiation product of Sb2Se3 anodes in Na‐ion batteries (NIBs), which enables the remarkably high‐rate ...
Amalie Skurtveit, Andrew Pastusic Jr., Anders Brennhagen, Faduma M. Maddar, Chris Erik Mohn, Abhoy Karmakar, Christopher A. O'Keefe, Ivana Hasa, Carmen Cavallo, Bjørnar Arstad, Helmer Fjellvåg, David S. Wragg, Alexey Y. Koposov   +12 more
wiley   +1 more source

A local-to-global inequality for spectral invariants and an energy dichotomy for Floer trajectories. [PDF]

J Fixed Point Theory Appl
Buhovsky L, Tanny S.
europepmc   +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

Analyses of an age structure HIV/AIDS compartmental model with optimal control theory. [PDF]

Sci Rep
Teklu SW, Guya TT, Kotola BS, Lachamo TS.   +3 more
europepmc   +1 more source

Reusable ReOx‐Pd/CeO2 Catalyst with Low Metal Surface Concentration for Efficient Consecutive Deoxydehydration and Hydrogenation of Vicinal OH Groups

Advanced Energy and Sustainability Research, EarlyView.
Less metal, more distance! The ReOx‐Pd/CeO2 catalyst, an active heterogeneous catalyst for the consecutive deoxydehydration and hydrogenation of vicinal diol, suffers a gradual loss of activity throughout its use due to the polymerization of monomeric ReOx active species.
Savitri Larasati, Yoshinao Nakagawa, Mizuho Yabushita, Keiichi Tomishige   +3 more
wiley   +1 more source

Model Design and Study of a U-Channel Photonic Crystal Fib Optic Sensor for Measuring Glucose Concentration in Blood. [PDF]

Sensors (Basel)
Zhao L, Yang H, Sun T, Song Q, Yi Z, Yi Y.   +5 more
europepmc   +1 more source

Doped Zinc Oxide‐Based Piezoelectric Devices for Energy Harvesting and Sensing

Advanced Energy and Sustainability Research, EarlyView.
This review provides a comprehensive overview of material properties, synthesis methods, and characterization techniques of doped ZnO, emphasizing the impact of doping on its structural and functional attributes. It highlights key findings, identifies knowledge gaps, and proposes future research directions to optimize doped ZnO for energy harvesting ...
Congran Jin, Junhu Zhou, Ziqian Wu, John X. J. Zhang   +3 more
wiley   +1 more source