High Efficiency Field Electron Source Using Diamond Nanopowders

• Project/Area Number: 22560347
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Single-year Grants
• Section: 一般
• Research Field: Electron device/Electronic equipment
• Research Institution: Toyo University
• Principal Investigator: YOSHIMOTO Tomomi 東洋大学, 理工学部, 教授 (60230819)
• Project Period (FY): 2010 – 2012
• Project Status: Completed (Fiscal Year 2012)
• Budget Amount: ¥4,420,000 (Direct Cost: ¥3,400,000、Indirect Cost: ¥1,020,000); Fiscal Year 2012: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000); Fiscal Year 2011: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000); Fiscal Year 2010: ¥2,340,000 (Direct Cost: ¥1,800,000、Indirect Cost: ¥540,000)
• Keywords: 電界放射 / ダイヤモンド / 微粒子 / 仕事関数 / 実効仕事関数

Research Abstract

The field emitters consisted of diamond nanopowders with sharp edges were fabricated and their field emission properties were investigated. Threshold voltage at which the emission current begins to flow is one of the most important parameter of the field emitter. The threshold voltage of fabricated emitters depended on the annealing temperatures. The origin of the phenomena was thought to be that the surface condition of the diamond nanopowders was changed by the annealing. The work function of the diamond nanopowders estimated by Richardson-Dushman plots was 1.87 eV. Since this value was much smaller than that of the conventional semiconductors and metals, the diamond nanopowders was good candidate for the material of field emitters.

Research Products

• [Journal Article] Low-Temperature Thermionic Emission from Diamond Micropowders with Sharp Edges (2013)
  • Author(s): T.YOSHIMOTO, T.IWATA
  • Journal Title: IEICE Tran.Electron. Volume: Vol.E96-C,No.1 Pages: 132-134
  • NAID: 10031167323
  • Peer Reviewed
• [Journal Article] Low-Temperature Thermionic Emission from Diamond Micropowders with Sharp Edges (2013)
  • Author(s): T. YOSHIMOTO, T. IWATA
  • Journal Title: IEICE Transactions on Electronics Volume: E96.C Issue: 1 Pages: 132-134
  • DOI: 10.1587/transele.E96.C.132
  • NAID: 10031167323
  • ISSN: 0916-8524, 1745-1353
  • Peer Reviewed
• [Journal Article] Improvementof Turn-on Voltage by ThermalAnnealing of a Tungsten Single Emitter Coated with a Carbonaceous Film Deposited in Liquid Methanol (2011)
  • Author(s): T. YOSHIMOTO, T. IWATA
  • Journal Title: IEICE Tran.Electron Volume: Vol.E94-C,No.12 Pages: 1913-1916
  • Peer Reviewed
• [Presentation] ダイヤモンドおよび炭化珪素微粒子からの熱電子放射による仕事関数の測定 (2012)
  • Author(s): 吉本智巳,岩田達夫
  • Organizer: 平成23年度工業技術研究所講演会
  • Place of Presentation: 東洋大学
  • Year and Date: 2012-02-22
• [Presentation] ダイヤモンドおよび炭化珪素微粒子からの熱電子放射による仕事関数の測定 (2012)
  • Author(s): 吉本智巳, 岩田達夫
  • Organizer: 工業技術研究所講演会(東洋大学)
  • Place of Presentation: 東洋大学(埼玉県)
  • Year and Date: 2012-02-22
• [Presentation] ダイヤモンド微粒子からの熱電子放射 (2010)
  • Author(s): 吉本智巳,佐藤和喜
  • Organizer: 第51回真空に関する連合講演会(真空?表面科学合同講演会)
  • Place of Presentation: 大阪大学
  • Year and Date: 2010-11-05
• [Presentation] ダイヤモンド微粒子からの熱電子放射 (2010)
  • Author(s): 吉本智巳, 佐藤和喜
  • Organizer: 第51回真空に関する連合講演会(真空・表面科学合同講演会)
  • Place of Presentation: 大阪大学(大阪府)