Results 91 to 100 of about 17,458 (221)

The quantum spin Hall effect and topological insulators

, 2010
In topological insulators, spin-orbit coupling and time-reversal symmetry combine to form a novel state of matter predicted to have exotic physical properties.Comment: 7 pages, 5 figures, an introduction of the quantum spin Hall effect and topological ...
Qi, Xiao-Liang, Zhang, Shou-Cheng
core   +1 more source

Progress Toward Efficient Wide‐Gap Cu(In,Ga)(S,Se)2 Thin‐Film Solar Cells

Progress in Photovoltaics: Research and Applications, Volume 34, Issue 5, Page 567-588, May 2026.
Wide‐gap Cu (In,Ga)(S,Se)2 thin‐film solar cells are studied in view of their performance, limitations, and opportunities for further optimization. Different sources of open circuit voltage limitations were discussed and weighted. Interface recombination appears the main recombination channel, which however can be influenced heavy alkali treatment ...
Setareh Zahedi‐Azad, Roland Scheer, Dimitrios Hariskos, Stefan Paetel, Wolfram Hempel, Wolfram Witte, Hao Luo, Oana Cojocaru‐Mirédin, Mary Blankenship, Dirk Hauschild, Victor van Maris, Lothar Weinhardt, Clemens Heske, Thomas Unold, José A. Márquez, Jasmin Seeger, Florian Wilhelmi, Michael Hetterich, Thomas Niesen, Patrick Eraerds, Thomas Dalibor, Xiaowei Jin, Reinhard Schneider, Dagmar Gerthsen, Di Wang, Christian Kübel   +25 more
wiley   +1 more source

On the Electron Transport in Simplified IBC‐SHJ Solar Cells With MoOx Blanket Layer

Progress in Photovoltaics: Research and Applications, Volume 34, Issue 5, Page 523-532, May 2026.
In this work, we present a study of electron transport through a novel (n)nc‐Si:H/MoOx stack to improve the understanding and performance of simplified IBC‐SHJ solar cells with MoOx blanket layer. The champion solar cell fabricated with the optimized contact stack and metalized with copper electroplating enables efficiencies beyond 23.5%.
Katarina Kovačević, Yifeng Zhao, Paul Procel, Liqi Cao, Miro Zeman, Luana Mazzarella, Olindo Isabella   +6 more
wiley   +1 more source

Design of an achromatic wide-view circular polarizer using normal dispersion films

Journal of Information Display, 2018
Proposed herein is an achromatic wide-view circular polarizer (CP) using normal dispersion films, which can suppress the light reflection over all the polar and azimuth angles.
Seung-Won Oh, Sang-Hyeok Kim, Jong-Min Baek, Tae-Hoon Yoon   +3 more
doaj   +1 more source

Laser cooling of trapped ytterbium ions with an ultraviolet diode laser

, 2005
We demonstrate an ultraviolet diode laser system for cooling of trapped ytterbium ions. The laser power and linewidth are comparable to previous systems based on resonant frequency doubling, but the system is simpler, more robust, and less expensive.
Bell, D. Kielpinski, Diddams, F. X. Kärtner, Gill, Gill, Helmcke, Hildebrandt, Hornekaer, Hosaka, J. A. Cox, Kielpinski, M. Cetina, Pinnington, Raizen, Ricci, Stenger, Sugiyama, Tino, Wineland, Yu   +20 more
core   +1 more source

Modeling and Design Principles for Plasmonic Nanoparticle‐Enhanced Perovskite Solar Cells: A Comprehensive Review

Solar RRL, Volume 10, Issue 7, 15 April 2026.
Perovskite solar cells have reached high power‐conversion efficiencies, yet further gains require improved optical design, particularly in the near‐infrared. This review surveys analytical and numerical studies on plasmonic nanoparticle‐enhanced perovskite solar cells (PSCs), clarifying key enhancement mechanisms. The influence of nanoparticle material,
Diogo F. Carvalho, Pedro M. Conceição, Jennifer P. Teixeira, Pedro M. P. Salomé, Paulo A. Fernandes, M. Rosário P. Correia   +5 more
wiley   +1 more source

Simultaneous implementation of antireflection and antitransmission through multipolar interference in plasmonic metasurfaces and applications in optical absorbers and broadband polarizers

Nanophotonics, 2020
Metasurfaces have been widely used to control beam propagation e.g. transmission, reflection, and absorption on an interface through a thin layer of nanoantennas with the thickness smaller than the wavelength.
Zhang Jihua, Wei Ran, Guo Chunlei
doaj   +1 more source

Identifying Recombination Mechanisms in Bifacial Perovskite Solar Cells: Consequences for High Efficiency Tandems

Solar RRL, Volume 10, Issue 7, 15 April 2026.
Illuminating bifacial perovskite solar cells (PSCs) from either side with different colors of light enables identification of different recombination mechanisms. Probing devices with varying wavelengths pinpoints nonradiative loss pathways and their spatial positions, resulting in a large contrast in fill factor, revealing the dominant loss mechanism ...
Sander Heester, Lidón Gil‐Escrig, Michele Sessolo, Henk J. Bolink, L. Jan Anton Koster   +4 more
wiley   +1 more source

Enhancement in Power Conversion Efficiency of GaAs Solar Cells by Utilizing Gold Nanostar Film for Light-Trapping

Frontiers in Chemistry, 2019
Light trapping, caused by the introduction of metallic nanoparticles, has been demonstrated to enhance photo-absorption in GaAs solar cells. In this study, we successfully synthesized gold nanostar thin film with hot spots and obtained a notable ...
Sheng-Qing Zhu, Bin Bian, Yun-Feng Zhu, Jun Yang, Dan Zhang, Lang Feng   +5 more
doaj   +1 more source

Deducing radiation pressure on a submerged mirror from the Doppler shift

, 2012
Radiation pressure on a flat mirror submerged in a transparent liquid, depends not only on the refractive index n of the liquid, but also on the phase angle psi_0 of the Fresnel reflection coefficient of the mirror, which could be anywhere between 0 ...
J. D. Jackson, L. Landau, Masud Mansuripur, P. W. Milonni, R. V. Jones   +4 more
core   +1 more source