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首頁> 外文會議>Micro- and nanotechnology sensors, systems, and applications V ; Flexible electronics >Fabrication of large-area twisted bilayer graphene for high-speed ultra-sensitive tunable photodetectors
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Fabrication of large-area twisted bilayer graphene for high-speed ultra-sensitive tunable photodetectors

機譯:高速超靈敏可調諧光電探測器大面積扭曲雙層石墨烯的制備

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摘要

Single layer graphene has shown promising applications in fast and sensitive optoelectronic applications such as optical modulators and photodetectors. Twisted bilayer graphene has the potential to further improve the performances of such graphene devices due to its modified electronic band structure. However, the lack of synthesis method for large-area isolated twisted bilayer graphene has limited device applications. After a brief review of recent development in single layer graphene optoelectronic property and photodetectors, we discuss unique optical properties of twisted bilayer graphene. We then show two methods that we have developed to fabricate large-size twisted bilayer graphene islands. The first method uses chemical vapor deposition; the other method utilizes mechanical stacking of two large-size single-layer graphene hexagons. The realization of such twisted bilayer graphene samples enables new development of novel graphene-based devices.
機譯:單層石墨烯已顯示出在快速和敏感的光電應用(如光學調制器和光電檢測器)中的應用前景。扭曲的雙層石墨烯由于其改良的電子帶結構而具有進一步改善此類石墨烯器件的性能的潛力。但是,缺乏大面積分離的扭曲雙層石墨烯的合成方法,限制了器件的應用。在簡要回顧了單層石墨烯光電性能和光電探測器的最新發展之后,我們討論了扭曲雙層石墨烯的獨特光學性能。然后,我們展示了我們開發出的兩種方法來制造大尺寸扭曲雙層石墨烯島。第一種方法使用化學氣相沉積;第二種方法使用化學氣相沉積。另一種方法是利用機械堆疊兩個大型單層石墨烯六邊形。這種扭曲的雙層石墨烯樣品的實現使得新的基于石墨烯的器件的新發展成為可能。

著錄項

  • 來源
  • 會議地點 Baltimore MD(US)
  • 作者單位

    Department of Electrical and Computer Engineering, University of Houston, Houston, TX 77204, USA;

    Department of Electrical and Computer Engineering, University of Houston, Houston, TX 77204, USA,Center for Advanced Materials, University of Houston, Houston, TX 77204, USA;

    Department of Electrical and Computer Engineering, University of Houston, Houston, TX 77204, USA;

    Department of Electrical and Computer Engineering, University of Houston, Houston, TX 77204, USA,Center for Advanced Materials, University of Houston, Houston, TX 77204, USA;

    College of Engineering Technology, University of Houston, Houston, TX 77204, USA;

    Department of Electrical and Computer Engineering, University of Houston, Houston, TX 77204, USA,Center for Advanced Materials, University of Houston, Houston, TX 77204, USA;

  • 會議組織
  • 原文格式 PDF
  • 正文語種 eng
  • 中圖分類
  • 關鍵詞

    twisted bilayer graphene; Raman; enhanced absorption; photodetectors;

    機譯:扭曲雙層石墨烯拉曼吸收增強;光電探測器;

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