2020年7月
Asymmetric carrier penetration into hexagonal boron nitride in graphene field effect transistors
Applied Physics Express
- ,
- ,
- 巻
- 13
- 号
- 7
- 開始ページ
- 075005
- 終了ページ
- 記述言語
- 英語
- 掲載種別
- 研究論文(学術雑誌)
- DOI
- 10.35848/1882-0786/ab9762
- 出版者・発行元
- IOP PUBLISHING LTD
The electronic structure of graphene field-effect transistors with a hexagonal boron nitride (h-BN) gate dielectric was studied in terms of the gate electric field and dielectric thickness using the density functional theory combined with the effective screening medium method. The calculation results showed that the carrier penetration into monolayer h-BN depended on the gate voltage that injected electrons or holes into graphene. The critical voltage for hole penetration was lower than that for electron penetration. At a fixed carrier concentration, carrier penetration soon occurred with increasing h-BN thickness for hole doping.
- リンク情報
- ID情報
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- DOI : 10.35848/1882-0786/ab9762
- ISSN : 1882-0778
- eISSN : 1882-0786
- Web of Science ID : WOS:000543264800001