Improvement of Electrical Device Performances for Graphene Directly Grown on a SiO<sub>2 </sub>Substrate by Plasma Chemical Vapor Deposition
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- SUZUKI Hiroo
- Department of Electronic Engineering, Tohoku University
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- KATO Toshiaki
- Department of Electronic Engineering, Tohoku University
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- KANEKO Toshiro
- Department of Electronic Engineering, Tohoku University
抄録
The electrical device performances of graphene directly grown on a SiO2 substrate have been improved through the precise adjustment of growth conditions such as growth temperature and growth time in plasma chemical vapor deposition (CVD). Only at the suitable combination of growth time and temperature, high quality and uniform graphene sheet can be directly grown on a SiO2 substrate. Forward and reverse sweeps of source-drain current (Ids) vs. gate bias voltage (Vgs) showed small hysteresis, possibly caused by the clean surface of the graphene device fabricated by plasma CVD, a technique that did not involve any transfer. Four-point probe measurements to evaluate the intrinsic sheet resistance of the fabricated graphene showed its value to be 170 - 200 Ω/sq, a value much lower than that of graphene directly grown on SiO2 substrate by other techniques. This low sheet resistance possibly originated from the high quality of graphene obtained by plasma CVD. These observations suggest that graphene directly grown on SiO2 substrate by plasma CVD should be a very promising candidate for fabrication of graphene-based high-performance electrical devices.
収録刊行物
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- Plasma and Fusion Research
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Plasma and Fusion Research 9 (0), 1206079-1206079, 2014
一般社団法人 プラズマ・核融合学会
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詳細情報 詳細情報について
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- CRID
- 1390282680229399040
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- NII論文ID
- 130005089497
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- ISSN
- 18806821
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- 本文言語コード
- en
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- データソース種別
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- JaLC
- Crossref
- CiNii Articles
- KAKEN
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- 抄録ライセンスフラグ
- 使用不可