Results 21 to 30 of about 5,576 (252)

Solution-Based Synthesis and Processing of Metal Chalcogenides for Thermoelectric Applications

open access: yesApplied Sciences, 2019
Metal chalcogenide materials are current mainstream thermoelectric materials with high conversion efficiency. This review provides an overview of the scalable solution-based methods for controllable synthesis of various nanostructured and thin-film metal
Kwok Wei Shah   +3 more
doaj   +1 more source

Charge self-regulation in 1T'''-MoS2 structure with rich S vacancies for enhanced hydrogen evolution activity

open access: yesNature Communications, 2022
Metal chalcogenides have shown promising performances for renewable hydrogen evolution and such activities are sensitive to the material electronic structures.
Xiaowei Guo   +8 more
doaj   +1 more source

Metal-non-metal transition in silver chalcogenides

open access: yesPhilosophical Magazine, 1976
Ag2S and Ag2Se undergo polymorphic, first-order transitions at about 133°C and 179°C respectively. Above the transition temperatures both compounds are cubic body centred and characterized by a strongly disturbed sublattice of Ag+ ions in a quasi molten state. This disorder is of course associated with a relatively large ionic conductivity.
Junod, P.   +3 more
openaire   +1 more source

Metal chalcogenides: An emerging material for electrocatalysis

open access: yesAPL Materials, 2021
The excessive consumption of fossil energy caused an energy crisis and a series of environmental issues. Therefore, it is necessary to develop sustainable and clean energy sources. Electrocatalysts play an important role in the development of various new
Jun Zhao   +5 more
doaj   +1 more source

DFT-aided machine learning-based discovery of magnetism in Fe-based bimetallic chalcogenides

open access: yesScientific Reports, 2023
With the technological advancement in recent years and the widespread use of magnetism in every sector of the current technology, a search for a low-cost magnetic material has been more important than ever.
Dharmendra Pant   +4 more
doaj   +1 more source

Electron-Deficient Acetylenes as Three-Modal Adjuvants in SNH Reaction of Pyridinoids with Phosphorus Nucleophiles

open access: yesMolecules, 2021
Publications covering a new easy metal-free functionalization of pyridinoids (pyridines, quinolines, isoquinolines, acridine) under the action of the system of electron-deficient acetylenes (acetylenecarboxylic acid esters, acylacetylenes)/P-nucleophiles
Boris A. Trofimov   +2 more
doaj   +1 more source

Mechanism for resistive switching in chalcogenide-based electrochemical metallization memory cells

open access: yesAIP Advances, 2015
It has been reported that in chalcogenide-based electrochemical metallization (ECM) memory cells (e.g., As2S3:Ag, GeS:Cu, and Ag2S), the metal filament grows from the cathode (e.g., Pt and W) towards the anode (e.g., Cu and Ag), whereas filament growth ...
Fei Zhuge   +10 more
doaj   +1 more source

Transition-metal substitutions in iron chalcogenides [PDF]

open access: yesPhysical Review B, 2015
The $ab$-plane resistivity and Hall effect are studied in Fe$_{1-y}$M$_y$Te$_{0.65}$Se$_{0.35}$ single crystals doped with two transition metal elements, M = Co or Ni, over a wide doping range, $0 \leq y \leq 0.2$. The superconducting transition temperature, $T_{c}$, reaches zero for Co at $y \simeq 0.14$ and for Ni at $y \simeq 0.032$, while the ...
Bezusyy, V. L.   +3 more
openaire   +2 more sources

Symmetry progression and possible polar metallicity in NiPS3 under pressure

open access: yesnpj 2D Materials and Applications, 2022
van der Waals solids are ideal platforms for the discovery of new states of matter and emergent properties under external stimuli. Under pressure, complex chalcogenides like MPS3 (M = Mn, Ni, Co, V) host sliding and structural transitions, insulator-to ...
Nathan C. Harms   +12 more
doaj   +1 more source

Solution-Mediated Inversion of SnSe to Sb2Se3 Thin-Films

open access: yesNanomaterials, 2022
New facile and controllable approaches to fabricating metal chalcogenide thin films with adjustable properties can significantly expand the scope of these materials in numerous optoelectronic and photovoltaic devices.
Svetlana Polivtseva   +8 more
doaj   +1 more source

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