Results 71 to 80 of about 5,632 (290)

Orbital Geometry‐Governed Response of Pressure‐Tunable Quantum Defects in hBN

Advanced Functional Materials, EarlyView.
Defects in hBN act as ultrasensitive quantum manometers when the energy of the intradefect optical transitions is modified by lattice compression. The orbital geometry of the electron wave functions governs how electron hopping and Coulomb interactions react uniquely to the reduction of the van der Waals gap and in‐plane compression, leading to robust ...
Magdalena Grzeszczyk, Danis I. Badrtdinov, Kenji Watanabe, Takashi Taniguchi, Cyrus E. Dreyer, Malte Rösner, Maciej Koperski   +6 more
wiley   +1 more source

Mössbauer studies of57Co-doped layered perovskites [PDF]

, 1990
Mössbauer spectra of57Co-doped polycrystalline or single-crystal samples of layered perovskites La2Mo4 (M=Cu, Co, Ni) and R2CuO4 (R=Nd, Eu, Gd) were recorded at room temperature and below.
Jha, S, Lahamer, Amer, Yehia, S, Thompson, JD, Suyanto, D, Julian, Gleen M, Fisk, Z, Dunlap, RA, Cheong, S-W   +8 more
core   +1 more source

Ultrasensitive Anti‐Stokes Luminescence Thermometry in Transition Metal Dichalcogenide Monolayers

Advanced Functional Materials, EarlyView.
We demonstrate a highly sensitive nanothermometer using anti‐Stokes photoluminescence, also known as photoluminescence upconversion (UPL), in monolayer tungsten disulfide. A strong resonantly enhanced UPL is observed, confirming the central role of optical phonons in the PL upconversion mechanism.
Sharada Nagarkar, Fahrettin Sarcan, Elanur Hut, Emiliano R. Martins, Stuart A. Cavill, Thomas F. Krauss, Yue Wang   +6 more
wiley   +1 more source

Seven-layered 2D Hybrid Lead Iodide Perovskites

, 2019
the work was granted access to the HPC resources of TGCC/CINES/IDRIS under the allocation 2017-A0010907682 made by GENCIInternational audienceTwo-dimensional hybrid halide perovskites offer high chemical versatility, strong potential in optoelectronics ...
Even, Jacky, Ke, Weijun, Chabinyc, Michael,, Kennard, Rhys,, Kennard, Rhys, M., Kanatzidis, Mercouri,, Stoumpos, Constantinos,, Traore, Boubacar, Stoumpos, Constantinos, C, Mao, Lingling, Kanatzidis, Mercouri, G, Chabinyc, Michael, L, Katan, Claudine   +12 more
core   +1 more source

Designed Lewis Acid–Base Passivation for High Performance Perovskite Solar Cells

Advanced Functional Materials, EarlyView.
ABSTRACT Silicon's high cost and long energy payback time remain major barriers to the global expansion of solar power. In contrast, metal–halide perovskites offer abundant, solution‐processable absorbers, and have achieved efficiencies of 25%–30%, positioning them as strong competitors to silicon.
Afna Manaf, Hiba Shahulhameed, Bhabani Sankar Swain, Shengzhong (Frank) Liu, Adel Najar   +4 more
wiley   +1 more source

Strong textural inheritance between perovskite and post-perovskite in the D" layer [PDF]

, 2013
The main mineral in the lower mantle, magnesium-silicate perovskite, transforms into a high-pressure, post-perovskite, phase at pressures and temperatures corresponding to the D'' seismic discontinuity approximately 200 km above the core-mantle boundary.
Dobson D. P., Miyajima N., NESTOLA, FABRIZIO, ALVARO, MATTEO, Casati N., Liebske C., Wood I. G., Walker A. M.   +7 more
openaire   +3 more sources

Extremely Long Electron Lifetime in Spontaneously Passivated Polycrystalline Perovskite Layers via Illumination‐Assisted Trap Filling

Advanced Functional Materials, EarlyView.
ABSTRACT Perovskite solar cells (PSCs) are promising next‐generation photovoltaics. The high performance of PSCs is attributed to the long carrier lifetimes of perovskite photoabsorbers. However, the carrier lifetimes of polycrystalline perovskite layers, which serve as the photoabsorbers in practical PSCs, have remained limited to several tens of ...
Naoyuki Nishimura, Ryuzi Katoh, Takurou N. Murakami   +2 more
wiley   +1 more source

Synthesis and electrical properties of doped layered perovskites based on BaMInO4 (M = Y, Gd)

Chimica Techno Acta
Perovskite or perovskite-related structural materials are widely studied for their many functional properties. They can be used as components of electrochemical devices such as solid oxide fuel cells and electrolyzers.
Nataliia Tarasova, Maxim Mashkovtsev, Maxim Domashenkov, Denis Khionin, Roman Bastrikov, Anzhelika Bedarkova   +5 more
doaj   +1 more source

Ferroelastic switching in a layered-perovskite thin film [PDF]

Nature Communications, 2016
AbstractA controllable ferroelastic switching in ferroelectric/multiferroic oxides is highly desirable due to the non-volatile strain and possible coupling between lattice and other order parameter in heterostructures. However, a substrate clamping usually inhibits their elastic deformation in thin films without micro/nano-patterned structure so that ...
Chuanshou Wang, Xiaoxing Ke, Jianjun Wang, Renrong Liang, Zhenlin Luo, Yu Tian, Di Yi, Qintong Zhang, Jing Wang, Xiu-Feng Han, Gustaaf Van Tendeloo, Long-Qing Chen, Ce-Wen Nan, Ramamoorthy Ramesh, Jinxing Zhang   +14 more
openaire   +3 more sources

Ultrasmall High‐Entropy Materials: Nanoscale Effects, Synthesis, and Mechanistic Insights

Advanced Functional Materials, EarlyView.
This review article focuses on sub‐10 nm high‐entropy materials that combine nanoscale design with complex compositions for next‐generation applications. ABSTRACT Ultrasmall high‐entropy nanomaterials (USHENMs, <10 nm) merge multicomponent chemistry with size‐dependent effects, forming a distinct class of materials with unprecedented properties.
Yueyue He, Wenbo Wang, Simon Schweidler, Yanjiao Ma, Ben Breitung, Torsten Brezesinski   +5 more
wiley   +1 more source