Abstract: High-performance graphene field-effect transistors have been fabricated on epitaxial graphene synthesized on a two-inch SiC wafer, achieving a cutoff. GHz Transistors from Wafer-Scale Epitaxial Graphene. Y.-M. Lin*,; C. Dimitrakopoulos,; K. A. Jenkins,; D. B. Farmer,; H.-Y. Chiu,; A. Grill. Including Carbon Nanotubes and Graphene Prasanna Chandrasekhar GHz transistors from wafer-scale epitaxial graphene” were reported, also from an of a SiC wafer, achieving a cutoff frequency of GHz for a gate length of nm.
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Where do you see your research leading in the future?
GHz transistors from wafer-scale epitaxial graphene.
Would you summarize the significance of your paper in layman’s terms? The author has also sent along images of his work. Working Life Forced to change—for good. In this paper, we presented an approach to fabricate top-gated graphene transistors using exfoliated graphene extracted from a graphite crystal, and demonstrated the operation of the graphene transistors at a frequency as high as 26 gigahertz, or 26 billion cycles per second.
While I do not expect to see any immediate social or political impact from our research, I hope that this research may open up new directions for the electronics industry beyond the conventional semiconductor materials such as Si, and potentially generate niche applications based on high-performance graphene devices.
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Log in through your institution Log in via OpenAthens. Graphene is a material that has generated enormous research interest and activity in the past few transsitors because of its unique electrical properties and its potential for use in future electronics. We do not capture any email address. Keith Jenkins and Dr. Message Subject Your Name has forwarded a page to you from Science.
This is an important milestone in utilizing graphene for technologically relevant applications. Graphene is a two-dimensional crystal consisting of a monolayer of carbon atoms arranged in a honeycomb lattice, and possessing unusual electronic properties that may eventually lead to vastly faster transistors than those achieved so far. Message Body Your Name thought you would like to see this page from the Science web site.
Save to my folders. Thank you for your interest in spreading the word about Science. This paper is likely well-cited because it presents one of the first experimental demonstrations of gigahertz graphene transistors with the highest frequency reported thus far, and establishes the scaling behavior of device performance with respect to the device dimension.
This work is therefore relevant and of interest to a wider audience within the graphene research community. Scanning electron microscope image of a graphene device.
This work also pointed out the issues to be addressed in order to fully utilize the potential of graphene in high-frequency electronics. More options Purchase digital access to this article Download and print this article for your personal scholarly, research, and educational use. Featured Analyses What’s Hot In Support Contact Us Corporate website. I hope the impact of this research could lead to graphene-based integrated circuits for analog and, perhaps, digital applications.
Alberto Valdes-Garcia designed the transistor and performed the RF characterization. The major challenges of this work included the design of the graphene transistor and the deposition of a high-quality oxide film as the gate insulator. Computer Science The sex robots are here. Science 21 December VolIssue Why do you think your paper is highly cited? Yu-Ming Lin talks with ScienceWatch.
100-GHz transistors from wafer-scale epitaxial graphene.
May – New Hot Papers: The maximum switching frequency of these devices exceeds that of silicon transistors with similar gate-electrode dimensions. Quasicrystals Tessellating tiny tetrahedrons. Register for free to read this article As a service to the community, this article is available for free.
I was already exploring electrical transport properties of graphene and its nano-ribbons, and became involved with the fabrication and characterization of translstors transistors when the CERA program was launched in May, Do you foresee any social or political implications for your research?
Graphene holds great wafer-scaoe for future electronics, and its destiny is largely linked to various materials issues that need to be resolved, including the synthesis of large-scale, high-quality graphene sheets and the improvement of the device fabrication process. Top-gated graphene field-effect transistor. Existing users log in. Another great challenge involved the deposition of a high-quality insulator on graphene without deteriorating its transport properties, and this issue was successfully epitaxiao by a process developed by Dr.
Yu-Ming Lin on the Importance of Graphene in the Future –
We also investigated, for the first time, the scaling behavior of graphene devices as the device dimension shrinks, which exhibits a grapnene trend from that of conventional semiconductors.
How did you become involved in this research, and were there any problems along the way? By placing a metal gate electrode on the graphene channel, we demonstrated a graphene transistor that is capable of amplifying electrical signals at very high frequencies.