Results 161 to 170 of about 19,535,634 (199)

Development of ZnO Buffer Layers for As‐Doped CdSeTe/CdTe Solar Cells with Efficiency Exceeding 20%

Advanced Materials Technologies, EarlyView.
Highly resistive ZnO has been used as the buffer layer in As‐doped CdSeTe/CdTe solar cells to achieve efficiencies higher than 20%. STEM images and EDX mapping show that the quality of the front interface is dependent on the ZnO deposition temperature. Unusually, chlorine is not observed at the front interface using EDX when the ZnO is deposited at 100
Luksa Kujovic, Xiaolei Liu, Mustafa Togay, Ali Abbas, Adam M. Law, Luke O. Jones, Kieran M. Curson, Kurt L. Barth, Jake W. Bowers, John M. Walls, Ochai Oklobia, Dan A. Lamb, Stuart J. C. Irvine, Wei Zhang, Chungho Lee, Timothy Nagle, Dingyuan Lu, Gang Xiong   +17 more
wiley   +1 more source

Reconfigurable Manipulation of Sound with a Multimaterial 3D Printed Origami Metasurface

Advanced Materials Technologies, EarlyView.
This paper demonstrates a programmable origami‐inspired metasurface, using multimaterial three‐dimensional printing technology to achieve reconfigurable sound manipulation. The unique bistable design enables rapid switching between configurations, allowing for precise control of acoustic reflections with minimal mechanical input. The results showcase a
Dinh Hai Le, Felix Kronowetter, Yan Kei Chiang, Marcus Maeder, Steffen Marburg, David A. Powell   +5 more
wiley   +1 more source

Triboelectrification During Water Intrusion–Extrusion into‐from Hydrophobic Nanopores

Advanced Materials Technologies, EarlyView.
An innovative class of tribogenerator (IE‐TENG) is proposed, which is based on cyclic water intrusion–extrusion into‐from hydrophobic nanopores. This IE‐TENG possesses surface area orders of magnitude higher than flat surfaces and achieves remarkable electricity generation.
Luis Bartolomé, Josh David Littlefair, Eder Amayuelas, Liam J. W. Johnson, Andrea Le Donne, Andris Šutka, Simone Meloni, Yaroslav Grosu   +7 more
wiley   +1 more source

Facile Synthesis of a Carbon Nano Dot‐Based Wearable Flexible Thermoelectric Device

Advanced Materials Technologies, EarlyView.
A wearable proto‐type device made with low‐cost, bio‐friendly, and environmentally safe materials that can be readily fabricated to generate energy from low waste temperatures is demonstrated. The Carbon Nano Dot composite thin films are supported by a flexible cellulose substrate that harnesses thermoelectric principles to generate power from body ...
Al Jumlat Ahmed, Joseph F. Olorunyomi, Shiqin Yan, Christopher D. Easton, Farnaz Zadehahmadi, Yannan Lu, Daniel Liang, Xavier Mulet, Cara M. Doherty   +8 more
wiley   +1 more source

Transforming Room Acoustics with Causality‐Driven Dual‐Function Passive Metamaterials

Advanced Materials Technologies, EarlyView.
This work presents an dual acoustic metamaterial for rooms that achieves excellent broadband performance for both sound absorption and sound diffusion. This is done by using causality formulations linking the absorption of the passive system to its volume, yielding an optimal surface area ratio required for excellent sound absorption and while ...
Eric Ballestero, Yang Meng, Ping Sheng, Vincent Tournat, Vicent Romero‐García, Jean‐Philippe Groby   +5 more
wiley   +1 more source

Hybrid Electroluminescence Device for On‐Demand Single Photon Generation at Room Temperature

Advanced Optical Materials, EarlyView.
New type of electroluminescent device based on hBN nanocrystals deposited on a GaN laser diode displays electrically driven emission of single photons at room temperature. Low g2(0) autocorrelation function values are achieved of < 0.2 for continuous driving and < 0.4 for on‐demand single‐photon emission.
Aleksander Rodek, Mateusz Hajdel, Kacper Oreszczuk, Anna Kafar, Muhammed Aktas, Łucja Marona, Marek Potemski, Czeslaw Skierbiszewski, Piotr Kossacki   +8 more
wiley   +1 more source

Photochromic Molecules Enable Optical Control of Optomechanical Coupling in a Cavity

Advanced Optical Materials, EarlyView.
An optomechanical system with optically‐tunable coupling is introduced, featuring a multilayered membrane with a photochromic molecule and NIR‐absorbing dye. Laser cooling of a membrane vibrational mode is evidenced, with a 60% improvement in efficiency achieved upon photoisomerization, as well as reversible control of photothermal forces.
Marta Cagetti, Michele Cardelli, Ennio Arimondo, Lorenzo Lavista, Francesca D'Elia, Andrea Camposeo, Dario Pisignano, Donatella Ciampini   +7 more
wiley   +1 more source

From the Bulk to the Nanoscale: Strong Evolution in the Structure and Chiroptical Properties of Chiral Halide Double Perovskites

Advanced Optical Materials, EarlyView.
A complete series of bromide‐based and iodide‐based 2D chiral double perovskites has been structurally characterized and their chiroptical properties investigated to reveal the effect of both polymorphism and nature of the halide anions in the circular dichroism of the thin films.
Maria Maniadi, Kostiantyn Tieriekhov, Olivier Ségut, Nicolas Mercier, Alexandre Abhervé   +4 more
wiley   +1 more source

Exciton Collimation, Focusing and Trapping Using Complex Transition Metal Dichalcogenide Lateral Heterojunctions

Advanced Optical Materials, EarlyView.
Controlling the motion of neutral excitons in optically active media is mandatory to the development of advanced circuits and devices for applications in excitonic. Transition Metal Dichalcogenide Lateral Heterojunctions allow advanced in‐plane control of the excitonic distribution and flux over large distances, and in particular exciton focalization ...
Hassan Lamsaadi, Aurelien Cuche, Gonzague Agez, Ioannis Paradisanos, Dorian Beret, Laurent Lombez, Pierre Renucci, Delphine Lagarde, Xavier Marie, Ziyang Gan, Antony George, Kenji Watanabe, Takashi Taniguchi, Andrey Turchanin, Nicolas Combe, Bernhard Urbaszek, Vincent Paillard, Jean‐Marie Poumirol   +17 more
wiley   +1 more source

Femtosecond Direct Laser Writing of Conductive and Electrically Switchable PEDOT:PSS Optical Nanostructures

Advanced Optical Materials, EarlyView.
Commercial femtosecond direct laser writing (Nanoscribe GT) is utilized to fabricate electrically switchable PEDOT:PSS nanostructures on ITO‐coated glass substrates, as well as underneath and on top of 3D‐printed structures and demonstrates beam‐switching at 1550 nm. Abstract Microscale three‐dimensional (3D)‐printing, with its remarkable precision and
Dominik Ludescher, Pavel Ruchka, Leander Siegle, Yanzhe Huang, Philipp Flad, Monika Ubl, Sabine Ludwigs, Mario Hentschel, Harald Giessen   +8 more
wiley   +1 more source