New solar cell is more efficient, costs less than its counterparts
New solar cell is more efficient, costs less than its counterparts. Exposed in step-like formation, layers of new photovoltaic cell harvest more of sun''s energy. MIT News Office August 29, 2016 MIT News. A silicon solar cell with silicon-germanium filter using a step-cell design (large) and a gallium arsenide phosphide layer on silicon …
Silicon-Germanium: Properties, Growth and Applications
Silicon-germanium is an important material that is used for the fabrication of SiGe heterojunction bipolar transistors and strained Si metal-oxide-semiconductor ( MOS. ) transistors for advanced …
Reversible Storage of Lithium in Three-Dimensional Macroporous Germanium | Chemistry of Materials …
In this work, the preparation of novel macroporous germanium (p-Ge) and its electrochemical characterization as anode material for lithium-ion batteries is presented. Three-dimensional (3D) macroporous germanium particles with a hexagonal-like morphology were successfully prepared using a magnesiothermic reduction method, in …
Germanium silicon oxide achieves multi-coloured ultra-long …
Here we report germanium silicon oxide (GSO) – a heavy-metal -free inorganic phosphor – that exhibits colour-tuned ultra-long phosphorescence and delayed fluorescence across a broad ...
Electrolytic Formation of Crystalline Silicon/Germanium Alloy Nanotubes and Hollow Particles with Enhanced Lithium-Storage …
Formation of Crystalline Silicon/Germanium Alloy Nanotubes and Hollow Particles with Enhanced ... S-doped materials for energy storage and conversion, including electrocatalytic water splitting ...
Scalable synthesis of spherical Si/C granules with 3D conducting networks as ultrahigh loading anodes …
Spherical Si/C granules are optimally designed and synthesized via a flexible and scalable fabrication process. The obtained Si/C anodes exhibit excellent electrochemical performance at ultrahigh mass loading (8.5 mg cm-2) and pressing density (1.6 g cm-3), and enable superior Li-ion pouch cells with LiNi 0.5 Co 0.3 Mn 0.2 O 2 as …
Understanding the Thermal Treatment Effect of Two-Dimensional Siloxene Sheets and the Origin of Superior Electrochemical Energy Storage ...
Two-dimensional siloxene sheets are an emerging class of materials with an eclectic range of potential applications including electrochemical energy conversion and storage sectors. Here, we demonst... Article Views are the COUNTER-compliant sum of full text ...
Energy storage: The future enabled by nanomaterials …
This review takes a holistic approach to energy storage, considering battery materials that exhibit bulk redox reactions and supercapacitor materials that store charge owing to the surface …
Silicon–Germanium: The Legacy Lives On
4.0/). Material Dynamics & Devices, Inc., Raleigh, NC 27603, USA; bruce@matdd . Abstract: Alloy systems comprised of silicon with germanium, lead with tellurium, and bismuth with antimony have constituted a majority of thermoelectric applications during the last half-century.
Recent progress on germanium-based anodes for lithium ion batteries: Efficient lithiation strategies and mechanisms …
Germanium-based materials with extremely high theoretical energy capacities have gained a lot of attention recently as potential anodes for lithium ion batteries. These materials can also offer improved Li insertion/extraction kinetics and cycling performance, providing a promising candidate of anode to meet the increasing demand …
Silicon–germanium
Silicon–germanium. SiGe ( / ˈsɪɡiː / or / ˈsaɪdʒiː / ), or silicon–germanium, is an alloy with any molar ratio of silicon and germanium, i.e. with a molecular formula of the form Si 1−x Ge x. It is commonly used as a semiconductor material in integrated circuits (ICs) for heterojunction bipolar transistors or as a strain -inducing ...
Solution phase synthesis of silicon and germanium nanowires
Si and Ge nanowires have attracted widespread interest due to their suitability for photovoltaic, nanoelectronic, sensing and energy storage applications. As a result, a variety of synthetic protocols have emerged which include chemical vapour deposition and solution phase approaches. Early solution based ap
Energies | Free Full-Text | Silicon–Germanium: The …
Alloy systems comprised of silicon with germanium, lead with tellurium, and bismuth with antimony have constituted a majority of thermoelectric applications during the last half-century. These legacy materials are primarily covalently bonded with a maximum ZT near one. Silicon–germanium alloys have provided the thermal to …
Energies | Free Full-Text | Silicon–Germanium: The …
This article reviews the history of silicon–germanium as a thermoelectric material and its use in NASA''s RTG programs. Since the device technology is also a …
Semiconductors
Semiconductors famously power modern electronics and computing—they''re used to make semiconductor devices, electronic circuit components that rely on the unique properties of semiconductors to function. They also form the foundation of modern lighting, telecommunications, and sensing technology. Examples of semiconductor materials …
Recent advances and perspectives of 2D silicon: Synthesis and application for energy storage …
Two-dimensional (2D) materials such as graphene have sparked great attention and research in every field. Among them, 2D silicon has wide potential applications in chemical sensor, hydrogen storage, semiconductors, electronic device, biomedicine and energy ...
Nanomaterials for Sustainable Energy in Hydrogen-Fuel Cell: …
The effect of substituting silicon (Si) in silicon carbide by germanium (Ge), tin (Sn) or lead (Pb) elements on the geometrical structure and H atom adsorption …
Aluminum and silicon based phase change materials for high capacity thermal energy storage …
DOI: 10.1016/J.APPLTHERMALENG.2015.05.037 Corpus ID: 106705416 Aluminum and silicon based phase change materials for high capacity thermal energy storage @article{Wang2015AluminumAS, title={Aluminum and silicon based phase change materials for high capacity thermal energy storage}, author={Zhengyun Wang and Hui …
Balanced approach to safety of high capacity silicon–germanium…
In order to meet the challenges posed by these applications, several approaches to incorporate high capacity lithium ion storage materials with nanostructured particles have been investigated, with a focus on high capacity silicon (4200 mAh/g), germanium (1600
Nanowire Heterostructures Comprising Germanium Stems and Silicon …
Here we report the rational design of a high-capacity Li-ion anode material comprising Ge nanowires with Si branches. The unique structure provides an electrode material with tunable properties, allowing the performance to be tailored for either high capacity or high rate capability by controlling the mass ratio of Si to Ge. The binder free Si–Ge branched …
481 Silicon–Germ Properties, Growth and Applications 22. Silicon–Germanium
germanium is its use in combination with silicon to produce a heterojunction. Strain is incorporated into the silicon–germanium or the silicon during growth, w. ich also gives improved physical properties such as higher values of mobility. This chapter reviews the properties of silicon–germanium, be-ginning.
Prelithiation of silicon/graphite composite anodes: Benefits and mechanisms …
Metalloid species, such as silicon, germanium and tin, are highly promising materials for high energy density cells. Their high capacities (3579 mA h g −1, 1600 mA h g −1 and 994 mA h g −1 respectively [ 10 ]) allow for thinner and lighter anodes.
High capacity lithium ion battery anodes of silicon and germanium
Lithium ion batteries with significantly higher energy and power density desired for new personal electronic devices, electric vehicles, and large-scale energy storage, require new materials. This review focuses on the replacement of the graphite anode with silicon or germanium. Si and Ge both have significantly higher Li storage …
Nanomaterials | Free Full-Text | First-Principles Dynamics Investigation of Germanium …
Germanium, a promising electrode material for high-capacity lithium ion batteries (LIBs) anodes, attracted much attention because of its large capacity and remarkably fast charge/discharge kinetics. Multivalent-ion batteries are of interest as potential alternatives to LIBs because they have a higher energy density and are less …
Energy Storage Materials | Journal | ScienceDirect by Elsevier
About the journal. Energy Storage Materials is an international multidisciplinary journal for communicating scientific and technological advances in the field of materials and their devices for advanced energy storage and relevant energy conversion (such as in metal-O2 battery). It publishes comprehensive research …. View full aims & scope.
Continuous electrodeposition of silicon and germanium …
The Si micro/nanowires, Ge micro/nanowires and SiGe alloy nanostructures synthesized in molten salts have been proven to be promising as energy storage materials [2, 36, 37], therefore, in this work, we only focused on exploring the continuous production of
Electrolytic Formation of Crystalline Silicon/Germanium Alloy Nanotubes and Hollow Particles with Enhanced Lithium‐Storage …
Angewandte Chemie International Edition is one of the prime chemistry journals in the world, publishing research articles, highlights, communications and reviews across all areas of chemistry. Li likes alloys: Crystalline SiGe alloy nanotubes and hollow particles are synthesized through a one-pot electrolytic process in molten salts.
Hydrogen Storage in Porous Silicon – A Review
Although hydrogen can be transported, stored, or used as a liquid or gas, gas storage needs very large amounts. Up to 15% of the hydrogen energy stored is spent on compres-sion. In addition, a high pressure storage tank is needed and these tanks are manufactured from woven carbon nanofibers, which are very costly.
Hidden orbital polarization in diamond, silicon, …
Recently, it was found that an electronic state can have hidden, site-dependent spin polarization even in non-magnetic materials with inversion symmetry. Our paper provides a new concept, so far ...
Electrolytic Formation of Crystalline Silicon/Germanium Alloy Nanotubes and Hollow Particles with Enhanced Lithium-Storage …
DOI: 10.1002/anie.201602653 Corpus ID: 35473741 Electrolytic Formation of Crystalline Silicon/Germanium Alloy Nanotubes and Hollow Particles with Enhanced Lithium-Storage Properties. @article{Xiao2016ElectrolyticFO, title={Electrolytic Formation of ...
