tag: nanosheets

Powering CFETs From The Backside
By Katherine Derbyshire - 21 Mar, 2024 - Comments: 0

The first CMOS circuits to incorporate backside power connections are likely to be based on stacked nanosheet transistors, but further down the road, planners envision complementary transistors (CFETs) that vertically integrate stacked NFET and PFET devices. With at least twice the thickness of a nanosheet transistor, connecting CFETs to each other and to the rest of the circuit is likely to... » read more

Research Bits: Mar. 11
By Jesse Allen - 11 Mar, 2024 - Comments: 0

Ferroelectric nanosheets Engineers from the University of Sydney, RMIT University, University of New South Wales, and University of Technology Sydney created a liquid metal alloy of tin, zirconium, and hafnium. The alloy has a thin oxide layer crust that enables it to be used to harvest ultra-thin tin oxide nanosheets doped with hafnium zirconium oxide, which could then be 2D printed on a subs... » read more

SRAM Scaling Issues, And What Comes Next
By Karen Heyman - 15 Feb, 2024 - Comments: 0

The inability of SRAM to scale has challenged power and performance goals forcing the design ecosystem to come up with strategies that range from hardware innovations to re-thinking design layouts. At the same time, despite the age of its initial design and its current scaling limitations, SRAM has become the workhorse memory for AI. SRAM, and its slightly younger cousin DRAM, have always co... » read more

Investigating Subthreshold Current Suppression in ReS2 Nanosheet-Based FETs
By Technical Paper Link - 26 Nov, 2023 - Comments: 0

A technical paper titled “Subthreshold Current Suppression in ReS2 Nanosheet-Based Field-Effect Transistors at High Temperatures” was published by researchers at University of Salerno, Università degli studi del Sannio, and University of Exeter. Abstract: "Two-dimensional rhenium disulfide (ReS2), a member of the transition-metal dichalcogenide family, has received significant attention... » read more

Navigating the Metrology Maze For GAA FETs
By Gregory Haley - 08 Aug, 2023 - Comments: 0

The chip industry is pushing the boundaries of innovation with the evolution of finFETs to gate-all-around (GAA) nanosheet transistors at the 3nm node and beyond, but it also is adding significant new metrology challenges. GAA represents a significant advancement in transistor architecture, where the gate material fully encompasses the nanosheet channel. This approach allows for the vertical... » read more

Nanosheet GAAFETs: Compact Modeling (Politecnico di Torino)
By Technical Paper Link - 07 Jun, 2023 - Comments: 0

A technical paper titled “NS-GAAFET Compact Modeling: Technological Challenges in Sub-3-nm Circuit Performance” was published by researchers at Politecnico di Torino. Abstract: "NanoSheet-Gate-All-Around-FETs (NS-GAAFETs) are commonly recognized as the future technology to push the digital node scaling into the sub-3 nm range. NS-GAAFETs are expected to replace FinFETs in a few years, as ... » read more

Etch Processes Push Toward Higher Selectivity, Cost Control
By Laura Peters - 18 May, 2023 - Comments: 0

Plasma etching is perhaps the most essential process in semiconductor manufacturing, and possibly the most complex of all fab operations next to photolithography. Nearly half of all fab steps rely on a plasma, an energetic ionized gas, to do their work. Despite ever-shrinking transistor and memory cells, engineers continue to deliver reliable etch processes. “To sustainably create chips... » read more

What Designers Need To Know About GAA
By Brian Bailey - 13 Apr, 2023 - Comments: 0

While only 12 years old, finFETs are reaching the end of the line. They are being supplanted by gate-all-around (GAA), starting at 3nm [1], which is expected to have a significant impact on how chips are designed. GAAs come in two main flavors today — nanosheets and nanowires. There is much confusion about nanosheets, and the difference between nanosheets and nanowires. The industry still ... » read more

Innovations in Device Design of The Gate-All-Around (GAA) Nanosheet FETs (IBM Research)
By Technical Paper Link - 23 Mar, 2023 - Comments: 0

A technical paper titled "A Review of the Gate-All-Around Nanosheet FET Process Opportunities" was published by researchers at IBM Research Albany. Abstract: "In this paper, the innovations in device design of the gate-all-around (GAA) nanosheet FET are reviewed. These innovations span enablement of multiple threshold voltages and bottom dielectric isolation in addition to impact of channel... » read more

2D Semiconductor Materials Creep Toward Manufacturing
By Katherine Derbyshire - 16 Feb, 2023 - Comments: 0

As transistors scale down, they need thinner channels to achieve adequate channel control. In silicon, though, surface roughness scattering degrades mobility, limiting the ultimate channel thickness to about 3nm. Two-dimensional transition metal dichalcogenides (TMDs), such as MoS2 and WSe2, are attractive in part because they avoid this limitation. With no out-of-plane dangling bonds and at... » read more

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