Tunneling Transistors Creep Near, Could Replace MOSFETs
January 31, 2013 7:10 PM
Long-standing device gets a nanotechnology boost
It's taking a dive into
, but the III-V tunneling field effect transistor (TFET) is finally creeping close to the widely used metal-oxide-semiconductor field effect transistor (MOSFET).
III-V TFETs are a three terminal extension of the tunneling diode, a device invented in 1957, which earned inventor Leo Esaki a Nobel Prize in Physics. Nicknamed the "Esaki transistor/diode" in his honor, the device went largely overlooked due to low driving currents in most applicable materials.
But a team led by electrical engineering professor
Rochester Institute of Technology
(RIT) has tuned the transistors to approach MOSFET performance. A key to the tuning was the work of graduate researcher David Pawlik who grew sub-120 nanometer vertical TFETs on a test chip that allow hundreds of diodes to be tested per sample. The research allowed multiple kinds of homojunction and heterojunctions to be tested.
Working with fellow graduate researchers Brian Romanczyk and Paul Thomas, as well as collaborators at
(a non-profit research consortium backed by top chipmakers) and
Texas State University
, the team recorded a record peak current density of 2.2 MA/cm^2.
The benefit of the III-V TFET is that they operate at a much lower voltage than MOSFETs and thus consume less watts of power. The record setting design ran at -0.3 V.
As its name implies, a tunneling FET is similar voltage wise to driving through a hill, instead of down one, says Professor Rommel. [Image Source: NCWpics]
Professor Rommel likens the traditional MOSFET to driving down a hill, voltage-wise, while the TFET, driven by quantum effects, is more like digging a tunnel through the hill. He
on the record current levels, "The tunneling field effect transistors have not yet demonstrated a sufficiently large drive current to make it a practical replacement for current transistor technology, but this work conclusively established the largest tunneling current ever experimentally demonstrated, answering a key question about the viability of tunneling field effect transistor technology."
He suggests in the paper that a peak current of 10 MA/cm^2 should be possible with high levels of doping in
The results could be applied in everything from smartphones to solar cells. Professor Rommel suggests tuned TFETs could reduce processor power consumption by a factor of 10, allowing longer battery life for phones and other devices.
The work was presented at a December at the
International Electron Devices Meeting (IEDM)
in San Francisco, Calif. The work was funded by
The National Science Foundation
(NSF), SEMATECH, and RIT's Office of the Vice President of Research.
"We are going to continue to work with them to make sure they understand the reality of the Internet. A lot of these people don't have Ph.Ds, and they don't have a degree in computer science." -- RIM co-CEO Michael Lazaridis
Scientists Cook Up 1-Atom Transistor, 12-Atom Magnetic Storage
February 20, 2012, 7:20 PM
Researchers Discover New Silicon Alternative
November 23, 2010, 10:53 AM
The Galaxy C9 Pro Samsung Smartphone Has 6GB RAM
October 24, 2016, 4:29 AM
The Unlocked Moto Z Play Launches for $449.99 Today.
October 22, 2016, 5:00 AM
Nintendo Announced Next Game Machine to be Portable “handheld”.
October 21, 2016, 5:00 AM
Do you hate to do yard work?
October 20, 2016, 5:00 AM
Smart Technology Mood Collar To Understand Your Dog’s Emotions
October 17, 2016, 5:00 AM
iBeat: A heart monitoring smartwatch that can save lives by Monique C. Bethell, Ph.D
October 8, 2016, 10:25 AM
Most Popular Articles
Car Insurance - The Hidden Discriminatory Practise
October 18, 2016, 5:00 AM
Is Razer Blade Stealth Laptop For You?
October 16, 2016, 5:00 AM
Cyber Hackers Threaten Security of Lifesaving Medical Devices
October 19, 2016, 8:09 AM
Excellent Wi-Fi Camera - Panasonic Lumix DMC-FZ300K
October 18, 2016, 5:00 AM
Problems with Windows 10 – Update Now
October 15, 2016, 7:30 AM
Latest Blog Posts
MacBoo Pro 2016: Release date Oct. 27
Oct 24, 2016, 7:16 AM
Mac Users, Try this if Your Mac is Infected?
Oct 23, 2016, 7:00 AM
Tips to Prevent Smartphones From Overheating:
Oct 22, 2016, 5:00 AM
Nasa Flies Drones at Nevada Airport
Oct 21, 2016, 8:21 AM
T-Mobile Data Problems
Oct 20, 2016, 10:17 AM
Annoying Apple Watch Problems and How to Fix Them
Oct 20, 2016, 5:00 AM
Your Mail May Soon Be Delivered By Robot
Oct 19, 2016, 9:34 AM
2018 Jeep Wrangler Prototype Sells At Junkyard
Oct 18, 2016, 5:00 AM
Samsung Shines with Gold Edition Tablet
Oct 17, 2016, 9:24 AM
Tesla Hints Mysterious Product Debut for October 17th
Oct 16, 2016, 10:14 AM
Samsung Galaxy Note 7 Phones on US flights
Oct 15, 2016, 5:00 AM
Comcast Fined $2.3 Million For Unconfirmed Services Charged To Customers
Oct 14, 2016, 5:00 AM
“American singer / songwriter “Bob Dylan is awarded 2016 Nobel Prize in Literature.
Oct 13, 2016, 10:33 AM
Battery Defect in Medical Device
Oct 12, 2016, 5:00 AM
IBM Bolsters Social Services Sector With Technology Grants
Oct 11, 2016, 5:00 AM
Scientists Sound Alarm on Climate but US Still Toys With Skepticism
Oct 10, 2016, 5:00 AM
IMEX America Trade Show
Oct 9, 2016, 10:00 AM
Phone Wars – Google VS Samsung Free Gifts on Purchase
Oct 6, 2016, 5:00 AM
More Blog Posts
Copyright 2016 DailyTech LLC. -
Terms, Conditions & Privacy Information