Performance of short-channel graphene field-effect devices with improved graphene-metal interfaces

2013 Fiscal Year Final Research Report

• Project/Area Number: 24651166
• Research Category: Grant-in-Aid for Challenging Exploratory Research
• Allocation Type: Single-year Grants
• Research Field: Microdevices/Nanodevices
• Research Institution: University of Tsukuba
• Principal Investigator: KANDA Akinobu 筑波大学, 数理物質系, 准教授 (30281637)
• Project Period (FY): 2012-04-01 – 2014-03-31
• Keywords: ナノ電子デバイス / グラフェン

Research Abstract

Owing to extremely high mobility, carbon atomic layer, graphene, is a promising candidate for future high-speed electronic material. On the other hand, graphene device has a problem that the field-effect mobility is severely degraded for a shorter channel. This is due to carrier injection from electrode metals. In this project, we investigated the influence of electrode connection in details for several metal species. Besides, we succeeded in removing the influence of electrode connection by inserting amorphous carbon layers between the graphene film and electrodes.

Research Products

• [Journal Article] Surface morphology of multilayer graphene synthesized directly on silicon dioxide (2013)
  • Author(s): Kenta Katakura, Hikari Tomori, Youiti Ootuka, and Akinobu Kanda
  • Journal Title: Phys. Status Solidi C Volume: Vol.10 Pages: 1628-1631
  • DOI: 10.1002/pssc.201300285
  • Peer Reviewed
• [Presentation] Reducing Carrier Density Pinning at Graphene/Metal Interfaces Using Interfacial Multilayer Graphene (2014)
  • Author(s): Akinobu Kanda
  • Organizer: APS March Meeting 2014
  • Place of Presentation: Denver (USA)
  • Year and Date: 2014-03-07
• [Presentation] Reducing Carrier Density Pinning at Graphene/Metal Interfaces Using Multi-layer Graphene (2013)
  • Author(s): Akinobu Kanda
  • Organizer: 2013 International Conference on Solid State Devices and Materials (SSDM 2013)
  • Place of Presentation: Fukuoka (Japan)
  • Year and Date: 2013-09-27
• [Presentation] グラフェン/金属電極界面に多層グラフェンを挿入したグラフェン電界効果トランジスタの電気伝導評価 (2013)
  • Author(s): 片倉健太
  • Organizer: 第74回応用物理学会秋季学術講演会
  • Place of Presentation: 同志社大学(京都)
  • Year and Date: 2013-09-18
• [Presentation] グラフェン電界効果トランジスタにおける電界効果移動度のチャンネル長依存性 (2013)
  • Author(s): 伊藤優
  • Organizer: 第74回応用物理学会秋季学術講演会
  • Place of Presentation: 同志社大学(京都)
  • Year and Date: 2013-09-18
• [Presentation] Fabrication and transport measurement of graphene field effect devices with multilayer graphene inserted into graphene/metal interfaces (2013)
  • Author(s): Kenta Katakura
  • Organizer: 5th International Conference on Recent Progress in Graphene Research (RPGR2013)
  • Place of Presentation: Tokyo (Japan)
  • Year and Date: 2013-09-12
• [Presentation] Channel length dependence of field effect mobility in short-channel graphene field-effect devices (2013)
  • Author(s): Yu Ito
  • Organizer: 5th International Conference on Recent Progress in Graphene Research (RPGR2013)
  • Place of Presentation: Tokyo (Japan)
  • Year and Date: 2013-09-12
• [Presentation] Surface morphology of few-layer graphene synthesized directly on silicon dioxide (2013)
  • Author(s): Akinobu Kanda
  • Organizer: The 40th International Symposium on Compound Semiconductors
  • Place of Presentation: Kobe (Japan)
  • Year and Date: 2013-05-22
• [Book] Experimental approaches to graphene electron transport for device applications, in "Physics and Chemistry of Graphene : Nanographene to Graphene" (2013)
  • Author(s): Akinobu Kanda(edited by T. Enoki)
  • Total Pages: 89-205(460 pages)
  • Publisher: Pan Stanford Publishing
• [Book] Gate-Voltage Modulation in Graphene, in "Graphene and its Fascinating Attributes" (2012)
  • Author(s): K. Tsukagoshi, H. Miyazaki, S.-L. Li, A. Kumatani, H. Hiura, A. Kanda(edited by S. K. Pati, T. Enoki, & C. N. R. Rao)
  • Total Pages: 179-188(270 pages)
  • Publisher: World Scientific Publishing
• [Remarks]
  • URL: http://lt.px.tsukuba.ac.jp/staff/kanda/index.html