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Graphene FET on Dia...
Graphene FET on Diamond for High-Frequency Electronics
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Asad, M. (författare)
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- Majdi, Saman, 1977- (författare)
- Uppsala universitet,Elektricitetslära,Diamond Electronics
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Vorobiev, A. (författare)
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Jeppson, K. (författare)
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- Isberg, Jan, 1964- (författare)
- Uppsala universitet,Elektricitetslära
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Stake, J. (författare)
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(creator_code:org_t)
- Institute of Electrical and Electronics Engineers (IEEE), 2022
- 2022
- Engelska.
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Ingår i: IEEE Electron Device Letters. - : Institute of Electrical and Electronics Engineers (IEEE). - 0741-3106 .- 1558-0563. ; 43:2, s. 300-303
- Relaterad länk:
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https://research.cha...
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https://urn.kb.se/re...
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https://doi.org/10.1...
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Abstract
Ämnesord
Stäng
- Transistors operating at high frequencies are the basic building blocks of millimeter-wave communication and sensor systems. The high charge-carrier mobility and saturation velocity in graphene can open way for ultra-fast field-effect transistors with a performance even better than what can be achieved with III-V-based semiconductors. However, the progress of high-speed graphene transistors has been hampered by fabrication issues, influence of adjacent materials, and self-heating effects. Here, we report on the improved performance of graphene field-effect transistors (GFETs) obtained by using a diamond substrate. An extrinsic maximum frequency of oscillation fmax of up to 54 GHz was obtained for a gate length of 500 nm. Furthermore, the high thermal conductivity of diamond provides an efficient heat-sink, and the relatively high optical phonon energy of diamond contributes to an increased charge-carrier saturation velocity in the graphene channel. Moreover, we show that GFETs on diamond exhibit excellent scaling behavior for different gate lengths. These results promise that the GFET-on-diamond technology has the potential of reaching sub-terahertz frequency performance.
Ämnesord
- TEKNIK OCH TEKNOLOGIER -- Elektroteknik och elektronik (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Electrical Engineering, Electronic Engineering, Information Engineering (hsv//eng)
Nyckelord
- Graphene
- Diamond
- field-effect transistors
- GFET
- MOGFET
- optical phonons
- saturation velocity
- Engineering Science with specialization in Science of Electricity
- Teknisk fysik med inriktning mot elektricitetslära
Publikations- och innehållstyp
- ref (ämneskategori)
- art (ämneskategori)
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