Clarification of the mechanism of superior field emission features from carbonized mechanical pencil lead edge

2016 Fiscal Year Final Research Report

• Project/Area Number: 15K13356
• Research Category: Grant-in-Aid for Challenging Exploratory Research
• Allocation Type: Multi-year Fund
• Research Field: Thin film/Surface and interfacial physical properties
• Research Institution: University of Tsukuba
• Principal Investigator: SASAKI Masahiro 筑波大学, 数理物質系, 教授 (80282333)
• Research Collaborator: HIGUCHI Toshiharu 筑波大学, 数理物質系, 研究員
• Project Period (FY): 2015-04-01 – 2017-03-31
• Keywords: 電界電子放出 / グラフェン / 電界放出分布 / エネルギー分布 / 共鳴トンネル / フラーレン

Outline of Final Research Achievements

The mechanism of field emission (FE) from carbon-related materials have not been clarified so far. Although the purpose at the beginning of this study is to clarify the mechanism of superior FE features from fully carbonized mechanical pencil lead, we could not find the way to obtain a required nano-sharp lead tip, which is dispensable for this study. Instead we have investigated FE from a C60 molecule adsorbed on a W tip as a well-defined carbon material. And we have found that the adsorbed C60 molecule shows various FE patterns corresponding to super-atomic molecular orbitals, specific for this molecule, indicating a clear feature to reveal the mechanism of FE from carbon-related materials.

Free Research Field

表面科学