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Improving Radio Frequency Transmission Properties of Graphene via Carrier Concentration Control toward High Frequency Transmission Line Applications
- Improving Radio Frequency Transmission Properties of Graphene via Carrier Concentration Control toward High Frequency Transmission Line Applications
- Yang, Jae Hoon; Yang, Hyoung Woo; Jun, Byoung Ok; Shin, Jeong Hee; Kim, Seunguk; Jang, A-Rang; Yoon, Seong In; Shin, Hyeon Suk; Park, Deoksoo; Park, Kyungho; Yoon, Duhee; Sohn, Jung Inn; Cha,SeungNam; Kang, Dae Joon; Jang, Jae Eun
- DGIST Authors
- Jang, Jae Eun
- Issue Date
- Advanced Functional Materials, 29(18), 1808057
- Article Type
- Author Keywords
- amorphous carbon; charge transfer; doping; graphene; RF transmission line
- Amorphous carbon; Charge transfer; Doping (additives); Electric lines; Graphene; Opacity; Radio transmission; Radio waves; Harsh environment; High carrier mobility; High frequency transmission lines; Radio frequency transmission; RF transmission; Stable performance; Transmission performance; Ultra-high frequency; Carrier concentration
- 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. © 2019 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim
- John Wiley & Sons Ltd.
- Related Researcher
Jang, Jae Eun
Advanced Electronic Devices Research Group(AEDRG) - Jang Lab.
Nanoelectroinc device; 생체 신호 센싱 시스템 및 생체 모방 디바이스; 나노 통신 디바이스
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- Department of Information and Communication EngineeringAdvanced Electronic Devices Research Group(AEDRG) - Jang Lab.1. Journal Articles
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