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High-performance flexible nanoscale transistors based on transition metal dichalcogenides


Read the paper here. Published June 17, 2021, Nature Electronics. Abstract Two-dimensional (2D) semiconducting transition metal dichalcogenides could be used to build high-performance flexible electronics. However, flexible field-effect transistors (FETs) based on such materials are typically fabricated with channel lengths on the micrometre scale, not benefitting from the short-channel advan... » read more

High-Temperature-Stable, Spin-On Carbon Materials For High-Aspect-Ratio Gap-Fill Applications


Brewer Science, Inc. has developed a class of novel, high-temperature-stable spin-on carbon (SOC)-based materials with excellent processability. These SOCs are cured under mild conditions and have flow properties that enable the fill of high-aspect-ratio vias in a void-free manner. Moreover, this new class of SOCs has remarkable thermal stability and can survive temperatures of up to 550°C wit... » read more

Demand, Lead Times Soar For 300mm Equipment


A surge in demand for various chips is causing select shortages and extended lead times for many types of 300mm semiconductor equipment, photomask tools, wafers, and other products. For the last several years, 200mm equipment has been in short supply in the market, but issues are now cropping up throughout the 300mm supply chain, as well. Traditionally, lead times have been three to six mont... » read more

Chasing After Carbon Nanotube FETs


Carbon nanotube transistors are finally making progress for potential use in advanced logic chips after nearly a quarter century in R&D. The question now is whether they will move out of the lab and into the fab. Several government agencies, companies, foundries, and universities over the years have been developing, and are now making advancements with carbon nanotube field-effect transi... » read more

3D NAND’s Vertical Scaling Race


3D NAND suppliers are accelerating their efforts to move to the next technology nodes in a race against growing competition, but all of these vendors are facing an assortment of new business, manufacturing, and cost challenges. Two suppliers, Micron and SK Hynix, recently leapfrogged the competition and have taken the scaling race lead in 3D NAND. But Samsung and the Kioxia-Western Digital (... » read more

Development Of Planarizing Spin-On Carbon Materials For High-Temperature Processes


Multilayer lithography is used for advanced semiconductor processes to pattern complex structures. As more and more procedures incorporate a high-temperature process, such as chemical vapor deposition (CVD), the need for thermally stable materials increases. For certain applications, a spin-on carbon (SOC) layer under the CVD layer is required to survive through a high-temperature process. ... » read more

Improving EUV Process Efficiency


The semiconductor industry is rethinking the manufacturing flow for extreme ultraviolet (EUV) lithography in an effort to improve the overall process and reduce waste in the fab. Vendors currently are developing new and potentially breakthrough fab materials and equipment. Those technologies are still in R&D and have yet to be proven. But if they work as planned, they could boost the flo... » read more

Node Within A Node


Enough margin exists in manufacturing processes to carve out the equivalent of a full node of scaling, but shrinking that margin will require a collective push across the entire semiconductor manufacturing supply chain. Margin is built into manufacturing at various stages to ensure that chips are manufacturable and yield sufficiently. It can include everything from variation in how lines are... » read more

Inspection, Metrology Challenges Grow For SiC


Inspection and metrology are becoming more critical in the silicon carbide (SiC) industry amid a pressing need to find problematic defects in current and future SiC devices. Finding defects always has been a challenging task for SiC devices. But it’s becoming more imperative to find killer defects and reduce them as SiC device vendors begin to expand their production for the next wave of a... » read more

System Bits: June 4


Thin films for quantum computing Researchers at Los Alamos National Laboratory report their development of two-dimensional tungsten/selenium thin films that can control the emission of single photons, potentially useful in quantum technologies. “Efficiently controlling certain thin-film materials so they emit single photons at precise locations—what’s known as deterministic quantum em... » read more

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