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Shin, Hyeon Suk
Lab for Nanomaterials and Nanoanalysis(LNN)
Research Interests
  • Two-dimensional materials, graphene, transition metal dichalcogenides, h-BN, heterostructure

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Improving Radio Frequency Transmission Properties of Graphene via Carrier Concentration Control toward High Frequency Transmission Line Applications

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Title
Improving Radio Frequency Transmission Properties of Graphene via Carrier Concentration Control toward High Frequency Transmission Line Applications
Author
Yang, Jae HoonYang, Hyoung WooJun, Byoung OkShin, Jeong HeeKim, SeungukJang, A-RangYoon, Seong InShin, Hyeon SukPark, DeoksooPark, KyunghoYoon, DuheeSohn, Jung InnCha, SeungNamKang, Dae JoonJang, Jae Eun
Issue Date
2019-05
Publisher
WILEY-V C H VERLAG GMBH
Citation
ADVANCED FUNCTIONAL MATERIALS, v.29, no.18, pp.1808057
Abstract
Graphene has been gradually studied as a high-frequency transmission line material owing to high carrier mobility with frequency independence up to a few THz. However, the graphene-based transmission lines have poor conductivity due to their low carrier concentration. Here, it is observed that the radio frequency (RF) transmission performance could be severely hampered by the defect-induced scattering, even though the carrier concentration is increased. As a possible solution, the deposition of the amorphous carbon on the graphene is studied in the high-frequency region up to 110 GHz. The DC resistance is reduced by as much as 60%, and the RF transmission property is also enhanced by 3 dB. Also, the amorphous carbon covered graphene shows stable performance under a harsh environment. These results prove that the carrier concentration control is an effective and a facile method to improve the transmission performance of graphene. It opens up the possibilities of using graphene as interconnects in the ultrahigh-frequency region.
URI
https://scholarworks.unist.ac.kr/handle/201301/27035
URL
https://onlinelibrary.wiley.com/doi/full/10.1002/adfm.201808057
DOI
10.1002/adfm.201808057
ISSN
1616-301X
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