AMO Manufactures First Graphene Transistors

Feb 08, 2007
AMO Manufactures First Graphene Transistors

In the scope of his innovative project ALEGRA the AMO nanoelectronics group of Dr. Max Lemme was able to manufacture top-gated transistor-like field-effect devices from monolayer graphene.

Compared to conventional silicon and SOI MOSFETs the researchers realized a significant enhancement of electron and hole mobility.

Moore’s law, which has dictated ambitious innovation cycles to the semiconductor industry over the last decades, may finally be running out of steam. In the future, innovations for silicon technology may only be realized by integrating new functionalities or novel materials.

Carbon is one of the most probable candidates: impressive potential for nanoelectronics applications has been demonstrated with carbon nanotubes – and graphene!

A conventional CMOS-compatible process has been applied to fabricate a graphene field-effect device – a transistor made from a monolayer of carbon. The observed mobility in the devices exceeds the universal mobility in silicon MOSFETs. Furthermore, a second transistor gate was placed on top of the graphene film for the first time. AMO’s results confirm the high potential of graphene for future nanoelectronic devices.

First experimental details will be published in IEEE Electron Device Letters in April 2007.

Citation: M.C. Lemme, T.J. Echtermeyer, M. Baus, H. Kurz, “A Graphene Field Effect Device”, IEEE Electron Device Letters, Vol. 28, No. 4, April 2007.

Source: AMO

Explore further: Strongly interacting electrons turn oxide interfaces into magnetically controlled and extra-efficient solar cells

add to favorites email to friend print save as pdf

Related Stories

Recommended for you

Three-dimensional metamaterials with a natural bent

18 hours ago

Metamaterials, a hot area of research today, are artificial materials engineered with resonant elements to display properties that are not found in natural materials. By organizing materials in a specific way, scientists ...

Wild molecular interactions in a new hydrogen mixture

Oct 20, 2014

Hydrogen—the most abundant element in the cosmos—responds to extremes of pressure and temperature differently. Under ambient conditions hydrogen is a gaseous two-atom molecule. As confinement pressure ...

Atomic trigger shatters mystery of how glass deforms

Oct 18, 2014

Throw a rock through a window made of silica glass, and the brittle, insulating oxide pane shatters. But whack a golf ball with a club made of metallic glass—a resilient conductor that looks like metal—and the glass not ...

User comments : 0