Monday, 08 February 2010 11:41

IBM sets graphene transistor record

IBM researchers have created the world's fastest graphene transistor.

IBM researchers have demonstrated a graphene transistor capable of operating at up to 100GHz. This makes it the fastest transistor using this material.

Furthermore, the graphene transistor is more than twice as fast as a silicon transistor with the same gate length.

Where graphite and diamond (the two relatively common forms of carbon) have a three-dimensional structure, the carbon atoms that make up graphene are arranged in a two-dimensional hexagonal lattice.

This gives the substance unique electrical, optical, mechanical and thermal properties.

"A key advantage of graphene lies in the very high speeds in which electrons propagate, which is essential for achieving high-speed, high-performance next generation transistors," said T C Chen, vice president, science and technology, IBM Research.

"The breakthrough we are announcing demonstrates clearly that graphene can be utilised to produce high performance devices and integrated circuits," added Chen.

How did IBM improve the speed of graphene transistors? Please read on.

Graphene wafers can be formed using the same technology used for silicon. IBM researchers have demonstrated that this approach works at least as well as graphene extracted from natural graphite.

Central to the speed improvement achieved by IBM is the use of a polymer layer between the graphene and the oxide gate insulator. This prevents electrons in the graphene from being scattered by the oxide.

The nature of the material means graphene transistors are not suited to digital applications, and so the technology is unlikely to replace silicon as the bedrock of our computers and other digital devices.

The research, funded by the US government's DARPA (Defense Advanced Research Projects Agency) is aimed at the creation of analogue semiconductors for next-generation communications devices.

Subscribe to ITWIRE UPDATE Newsletter here


The much awaited iTWire Shop is now open to our readers.

Visit the iTWire Shop, a leading destination for stylish accessories, gear & gadgets, lifestyle products and everyday portable office essentials, drones, zoom lenses for smartphones, software and online training.

PLUS Big Brands include: Apple, Lenovo, LG, Samsung, Sennheiser and many more.

Products available for any country.

We hope you enjoy and find value in the much anticipated iTWire Shop.



iTWire TV offers a unique value to the Tech Sector by providing a range of video interviews, news, views and reviews, and also provides the opportunity for vendors to promote your company and your marketing messages.

We work with you to develop the message and conduct the interview or product review in a safe and collaborative way. Unlike other Tech YouTube channels, we create a story around your message and post that on the homepage of ITWire, linking to your message.

In addition, your interview post message can be displayed in up to 7 different post displays on our the site to drive traffic and readers to your video content and downloads. This can be a significant Lead Generation opportunity for your business.

We also provide 3 videos in one recording/sitting if you require so that you have a series of videos to promote to your customers. Your sales team can add your emails to sales collateral and to the footer of their sales and marketing emails.

See the latest in Tech News, Views, Interviews, Reviews, Product Promos and Events. Plus funny videos from our readers and customers.


Stephen Withers

Stephen Withers is one of Australia¹s most experienced IT journalists, having begun his career in the days of 8-bit 'microcomputers'. He covers the gamut from gadgets to enterprise systems. In previous lives he has been an academic, a systems programmer, an IT support manager, and an online services manager. Stephen holds an honours degree in Management Sciences and a PhD in Industrial and Business Studies.

Share News tips for the iTWire Journalists? Your tip will be anonymous




Guest Opinion

Guest Reviews

Guest Research

Guest Research & Case Studies

Channel News