News

January 21-22, 2020 2nd Li-Ion Solid Electrolyte & Lithium Metal (Liquid & Solid electrolyte) Rechargeable Cells Manufacturing Seminar (USA), Livermore, USA,  This seminar focuses on the technology, design and manufacturing of rechargeable Lithium ion solid state electrolyte & lithium metal (solid & liquid electrolyte) cells. In practical sessions, cell assembly will be performed in hands-on training by starting with raw materials and going through to the final cell assembly, test and characterization. During this seminar, members from Ampcera Inc. will give a presentation titled "Materials for Solid-State Electrolytes".  The latest Ampcera solid electrolyte materials and technologies to be highlighted in this presentation include...

Researchers at Tohoku University have discovered a method to quickly, cost-effectively, and non-destructively detect carbon impurities in nitride-based crystals that are used in electrical and optical devices such as LEDs and transistors.  Light can be used to analyze the crystals for defects through omnidirectional photoluminescence (ODPL) spectroscopy, which is a marked improvement over the current methodologies available to the semiconductor industry.  ODPL illuminates the crystal, in this case gallium nitride (GaN), and is absorbed by it, exciting the electrons within.  When they return to their ground state, the crystal emits light to dissipate the absorbed energy.  Spectroscopy will then determine...

Researchers at the Pohang University of Science & Technology (POSTECH) Department of Chemistry have discovered that redox reactions can be used to control the properties of two-dimensional (2D) materials.  Redox reactions between water and oxygen molecules in the air drive an electrochemical reaction within 2D materials that dopes them with charges from the surrounding environment.  For this experiment, graphene and tungsten disulfide were analyzed, using Raman spectroscopy and photoluminescence imaging respectively, to demonstrate this phenomenon on the nanoscale.  Key material properties such as the magnetic, optical, and electrical nature of the materials were all controllable via redox manipulation.  Now that...

Researchers at the University of Delaware have developed a new, high-electron mobility transistor based on gallium nitride (GaN) with a barrier of indium aluminum-nitride on top of a silicon substrate.  Among its record-setting properties, the new transistor demonstrates the following: Low gate leakage current that ensures over the operation of the device, it does not lose a significant amount of current in the form of heat and general efficiency loss High on/off current ratio which generates a large, measureable difference in the magnitude of current that is transmitted when the device is in its on state versus its off state...

An international conglomerate of scientists and researchers from Drexel, Stanford, Graphene Labs, the Center for Advancing Electronics Dresden (CFAED) and others have collaborated to develop a report that details how the future of energy storage technology lies in nanomaterials.  The chief benefits of nanomaterials can be summarized into five major categories: Lifetime – nanoparticles allow devices to achieve longer lifetimes due to their minimized contact area, which prevents strain induced degradation during battery cycling. Flexibility – nanowire (1D) and nanoflake (2D) materials are both compatible with flexible devices while simultaneously achieving high electronic and ionic conductivity. Manufacturing – the unique...