2015 Fiscal Year Final Research Report
Graphene terahertz detectors based on plasmons and resonant tunneling
| Project/Area Number |
26820123
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| Research Category |
Grant-in-Aid for Young Scientists (B)
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| Allocation Type | Multi-year Fund |
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| Research Field |
Electron device/Electronic equipment
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| Research Institution | Tohoku University |
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Principal Investigator |
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| Research Collaborator |
OTSUJI Taiichi
SUEMITSU Tetsuya
SATOU Akira
RYZHII Victor
WATANABE Takayuki
YADAV Deepika
KURITA Yuki
POPOV Vyacheslav
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| Project Period (FY) |
2014-04-01 – 2016-03-31
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| Keywords | テラヘルツ / グラフェン / 検出 / プラズモン / 共鳴トンネリング |
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| Outline of Final Research Achievements |
This study was devoted to develop a novel terahertz detector in which the graphene plasmon and quantum-mechanical resonant tunneling are newly introduced as the operation principles. The device consists of a double-graphene-layer in which a tunnel barrier layer is sandwiched by two monolayer-graphene layers and an external gate control element. The device can exploit the photon-assisted resonant tunneling as well as graphene plasmonic resonances as highly sensitive terahertz detection principles. In order to examine the feasibility of the device operation, test devices were fabricated and their property were experimentally measured, confirming the validity of the proposed device structures and the operation principles.
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| Free Research Field |
工学
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