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High-frequency graphene voltage amplifier.
| Content Provider | Semantic Scholar |
|---|---|
| Author | Han, Shu-Jen Jenkins, Keith A. Garcia, Alberto Valdes Franklin, Aaron D. Bol, Ageeth A. Haensch, Wilfried E. |
| Copyright Year | 2011 |
| Abstract | While graphene transistors have proven capable of delivering gigahertz-range cutoff frequencies, applying the devices to RF circuits has been largely hindered by the lack of current saturation in the zero band gap graphene. Herein, the first high-frequency voltage amplifier is demonstrated using large-area chemical vapor deposition grown graphene. The graphene field-effect transistor (GFET) has a 6-finger gate design with gate length of 500 nm. The graphene common-source amplifier exhibits ∼5 dB low frequency gain with the 3 dB bandwidth greater than 6 GHz. This first AC voltage gain demonstration of a GFET is attributed to the clear current saturation in the device, which is enabled by an ultrathin gate dielectric (4 nm HfO(2)) of the embedded gate structures. The device also shows extrinsic transconductance of 1.2 mS/μm at 1 V drain bias, the highest for graphene FETs using large-scale graphene reported to date. |
| Starting Page | 1123 |
| Ending Page | 1128 |
| Page Count | 6 |
| File Format | PDF HTM / HTML |
| Alternate Webpage(s) | https://franklin.pratt.duke.edu/sites/franklin.pratt.duke.edu/files/u9/Papers/Han_NanoLett_2011.pdf |
| PubMed reference number | 21805988v1 |
| Alternate Webpage(s) | https://doi.org/10.1021/nl2016637 |
| DOI | 10.1021/nl2016637 |
| Journal | Nano letters |
| Volume Number | 11 |
| Issue Number | 9 |
| Language | English |
| Access Restriction | Open |
| Subject Keyword | Arabic numeral 0 Embedding Exhibits as Topic Graphene Transistor Device Component vapor voltage |
| Content Type | Text |
| Resource Type | Article |
